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Finding the Fourth Proportional to 392,528, 541,759.32 and 231,373.52

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Solution

The fourth proportional to 392,528, 541,759.32 and 231,373.52 is: 319,337.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,528 : 541,759.32 = 231,373.52 : x
  2. Step 2: Convert to fraction form
    392,528/541,759.32 = 231,373.52/x
  3. Step 3: Cross multiply
    392,528x = 541,759.32 × 231,373.52
  4. Step 4: Simplify right side
    392,528x = 125,348,760,861.21
  5. Step 5: Solve for x
    x = 125,348,760,861.21/392,528
  6. Step 6: Final answer
    x = 319,337.12

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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.