Finding the Fourth Proportional to 486,972.09, 730,458.12 and 131,986.10
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Solution
The fourth proportional to 486,972.09, 730,458.12 and 131,986.10 is: 197,979.15
Step by Step Solution
- Step 1: Write the proportion equation
486,972.09 : 730,458.12 = 131,986.10 : x - Step 2: Convert to fraction form
486,972.09/730,458.12 = 131,986.10/x - Step 3: Cross multiply
486,972.09x = 730,458.12 × 131,986.10 - Step 4: Simplify right side
486,972.09x = 96,410,318,472.13 - Step 5: Solve for x
x = 96,410,318,472.13/486,972.09 - Step 6: Final answer
x = 197,979.15
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Similar ratio
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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.