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Finding the Fourth Proportional to 381,035.34, 571,815.45 and 131,717.34

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Solution

The fourth proportional to 381,035.34, 571,815.45 and 131,717.34 is: 197,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,035.34 : 571,815.45 = 131,717.34 : x
  2. Step 2: Convert to fraction form
    381,035.34/571,815.45 = 131,717.34/x
  3. Step 3: Cross multiply
    381,035.34x = 571,815.45 × 131,717.34
  4. Step 4: Simplify right side
    381,035.34x = 75,318,010,044.90
  5. Step 5: Solve for x
    x = 75,318,010,044.90/381,035.34
  6. Step 6: Final answer
    x = 197,666.73

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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.