Finding the Fourth Proportional to 396,505.13, 547,424.78 and 272,539.49
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Solution
The fourth proportional to 396,505.13, 547,424.78 and 272,539.49 is: 376,274.75
Step by Step Solution
- Step 1: Write the proportion equation
396,505.13 : 547,424.78 = 272,539.49 : x - Step 2: Convert to fraction form
396,505.13/547,424.78 = 272,539.49/x - Step 3: Cross multiply
396,505.13x = 547,424.78 × 272,539.49 - Step 4: Simplify right side
396,505.13x = 149,194,866,254.74 - Step 5: Solve for x
x = 149,194,866,254.74/396,505.13 - Step 6: Final answer
x = 376,274.75
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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.