Home / 396,727.13-547,487.40-215,440.62

Finding the Fourth Proportional to 396,727.13, 547,487.40 and 215,440.62

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Solution

The fourth proportional to 396,727.13, 547,487.40 and 215,440.62 is: 297,310.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,727.13 : 547,487.40 = 215,440.62 : x
  2. Step 2: Convert to fraction form
    396,727.13/547,487.40 = 215,440.62/x
  3. Step 3: Cross multiply
    396,727.13x = 547,487.40 × 215,440.62
  4. Step 4: Simplify right side
    396,727.13x = 117,951,024,898.19
  5. Step 5: Solve for x
    x = 117,951,024,898.19/396,727.13
  6. Step 6: Final answer
    x = 297,310.21

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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.