what is the total number of medals for all the countries ranked fourth ?
CREATE TABLE table_204_308 (
    id number,
    "rank" number,
    "nation" text,
    "gold" number,
    "silver" number,
    "bronze" number,
    "total" number
)
SELECT SUM("total") FROM table_204_308 WHERE "rank" = 4
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: what is the total number of medals for all the countries ranked fourth ? ### Input: CREATE TABLE table_204_308 (
    id number,
    "rank" number,
    "nation" text,
    "gold" number,
    "silver" number,
    "bronze" number,
    "total" number
) ### Response: SELECT SUM("total") FROM table_204_308 WHERE "rank" = 4