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Finding the Fourth Proportional to 381,105.55, 571,658.36 and 100,625.23

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Solution

The fourth proportional to 381,105.55, 571,658.36 and 100,625.23 is: 150,937.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,105.55 : 571,658.36 = 100,625.23 : x
  2. Step 2: Convert to fraction form
    381,105.55/571,658.36 = 100,625.23/x
  3. Step 3: Cross multiply
    381,105.55x = 571,658.36 × 100,625.23
  4. Step 4: Simplify right side
    381,105.55x = 57,523,252,024.15
  5. Step 5: Solve for x
    x = 57,523,252,024.15/381,105.55
  6. Step 6: Final answer
    x = 150,937.85

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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.