Finding the Fourth Proportional to 409,857.20, 615,246.60 and 316,775.60
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Solution
The fourth proportional to 409,857.20, 615,246.60 and 316,775.60 is: 475,519.55
Step by Step Solution
- Step 1: Write the proportion equation
409,857.20 : 615,246.60 = 316,775.60 : x - Step 2: Convert to fraction form
409,857.20/615,246.60 = 316,775.60/x - Step 3: Cross multiply
409,857.20x = 615,246.60 × 316,775.60 - Step 4: Simplify right side
409,857.20x = 194,895,110,862.96 - Step 5: Solve for x
x = 194,895,110,862.96/409,857.20 - Step 6: Final answer
x = 475,519.55
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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.