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Finding the Fourth Proportional to 381,391.11, 572,068.11 and 141,551.73

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Solution

The fourth proportional to 381,391.11, 572,068.11 and 141,551.73 is: 212,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,391.11 : 572,068.11 = 141,551.73 : x
  2. Step 2: Convert to fraction form
    381,391.11/572,068.11 = 141,551.73/x
  3. Step 3: Cross multiply
    381,391.11x = 572,068.11 × 141,551.73
  4. Step 4: Simplify right side
    381,391.11x = 80,977,230,648.33
  5. Step 5: Solve for x
    x = 80,977,230,648.33/381,391.11
  6. Step 6: Final answer
    x = 212,320.71

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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.