Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 Henry scored 50 points on his Geography test, 70 on his Math test and 66 on his English test. If his History score is the average of these 3 scores, what was his total score across all 4 subjects?


### Response:
 La somme de ses scores pour les 3 premières matières est de 50+70+66 = <<50+70+66=186>>186.
Son score en histoire est la moyenne des 3 scores, soit total/3 = 186/3 = <<186/3=62>>62.
Son score pour les 4 matières est de 186 + 62 = <<186+62=248>>248.