Finding the Fourth Proportional to 410,126.80, 615,132.60 and 129,672.40
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Solution
The fourth proportional to 410,126.80, 615,132.60 and 129,672.40 is: 194,490.39
Step by Step Solution
- Step 1: Write the proportion equation
410,126.80 : 615,132.60 = 129,672.40 : x - Step 2: Convert to fraction form
410,126.80/615,132.60 = 129,672.40/x - Step 3: Cross multiply
410,126.80x = 615,132.60 × 129,672.40 - Step 4: Simplify right side
410,126.80x = 79,765,720,560.24 - Step 5: Solve for x
x = 79,765,720,560.24/410,126.80 - Step 6: Final answer
x = 194,490.39
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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.