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Finding the Fourth Proportional to 396,630.92, 595,182.77 and 143,931.13

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Solution

The fourth proportional to 396,630.92, 595,182.77 and 143,931.13 is: 215,982.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,630.92 : 595,182.77 = 143,931.13 : x
  2. Step 2: Convert to fraction form
    396,630.92/595,182.77 = 143,931.13/x
  3. Step 3: Cross multiply
    396,630.92x = 595,182.77 × 143,931.13
  4. Step 4: Simplify right side
    396,630.92x = 85,665,326,974.76
  5. Step 5: Solve for x
    x = 85,665,326,974.76/396,630.92
  6. Step 6: Final answer
    x = 215,982.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.