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Finding the Fourth Proportional to 381,020.96, 571,793.88 and 131,702.96

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Solution

The fourth proportional to 381,020.96, 571,793.88 and 131,702.96 is: 197,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,020.96 : 571,793.88 = 131,702.96 : x
  2. Step 2: Convert to fraction form
    381,020.96/571,793.88 = 131,702.96/x
  3. Step 3: Cross multiply
    381,020.96x = 571,793.88 × 131,702.96
  4. Step 4: Simplify right side
    381,020.96x = 75,306,946,505.88
  5. Step 5: Solve for x
    x = 75,306,946,505.88/381,020.96
  6. Step 6: Final answer
    x = 197,645.15

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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.