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Finding the Fourth Proportional to 396,358.76, 547,429.38 and 260,997.86

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Solution

The fourth proportional to 396,358.76, 547,429.38 and 260,997.86 is: 360,476.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,358.76 : 547,429.38 = 260,997.86 : x
  2. Step 2: Convert to fraction form
    396,358.76/547,429.38 = 260,997.86/x
  3. Step 3: Cross multiply
    396,358.76x = 547,429.38 × 260,997.86
  4. Step 4: Simplify right side
    396,358.76x = 142,877,896,681.13
  5. Step 5: Solve for x
    x = 142,877,896,681.13/396,358.76
  6. Step 6: Final answer
    x = 360,476.19

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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.