Answer: There are 200 students at the basket ball game.
Step-by-step explanation:
Since we have given that
Number of students in fourth grade = 50
Number of students in fifth grade = 54
Number of students in sixth grade = 60
According to question, we get that There were 4 times the number of students in fourth grade at the basket ball game.
So, Number of students at the basket ball game is given by

Hence, there are 200 students at the basket ball game.