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Finding the Fourth Proportional to 396,861.17, 595,373.76 and 130,637.66

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Solution

The fourth proportional to 396,861.17, 595,373.76 and 130,637.66 is: 195,983.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,861.17 : 595,373.76 = 130,637.66 : x
  2. Step 2: Convert to fraction form
    396,861.17/595,373.76 = 130,637.66/x
  3. Step 3: Cross multiply
    396,861.17x = 595,373.76 × 130,637.66
  4. Step 4: Simplify right side
    396,861.17x = 77,778,231,854.93
  5. Step 5: Solve for x
    x = 77,778,231,854.93/396,861.17
  6. Step 6: Final answer
    x = 195,983.48

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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.