Finding the Fourth Proportional to 211,538.40, 317,307.60 and 202,207.20
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Solution
The fourth proportional to 211,538.40, 317,307.60 and 202,207.20 is: 303,310.80
Step by Step Solution
- Step 1: Write the proportion equation
211,538.40 : 317,307.60 = 202,207.20 : x - Step 2: Convert to fraction form
211,538.40/317,307.60 = 202,207.20/x - Step 3: Cross multiply
211,538.40x = 317,307.60 × 202,207.20 - Step 4: Simplify right side
211,538.40x = 64,161,881,334.72 - Step 5: Solve for x
x = 64,161,881,334.72/211,538.40 - Step 6: Final answer
x = 303,310.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.