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Finding the Fourth Proportional to 381,252.18, 571,882.36 and 115,015

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Solution

The fourth proportional to 381,252.18, 571,882.36 and 115,015 is: 172,523.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,252.18 : 571,882.36 = 115,015 : x
  2. Step 2: Convert to fraction form
    381,252.18/571,882.36 = 115,015/x
  3. Step 3: Cross multiply
    381,252.18x = 571,882.36 × 115,015
  4. Step 4: Simplify right side
    381,252.18x = 65,775,049,635.40
  5. Step 5: Solve for x
    x = 65,775,049,635.40/381,252.18
  6. Step 6: Final answer
    x = 172,523.73

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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.