Finding the Fourth Proportional to 396,420.18, 547,061.28 and 215,132.06
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Solution
The fourth proportional to 396,420.18, 547,061.28 and 215,132.06 is: 296,883.02
Step by Step Solution
- Step 1: Write the proportion equation
396,420.18 : 547,061.28 = 215,132.06 : x - Step 2: Convert to fraction form
396,420.18/547,061.28 = 215,132.06/x - Step 3: Cross multiply
396,420.18x = 547,061.28 × 215,132.06 - Step 4: Simplify right side
396,420.18x = 117,690,420,112.64 - Step 5: Solve for x
x = 117,690,420,112.64/396,420.18 - Step 6: Final answer
x = 296,883.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.