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Finding the Fourth Proportional to 381,252.57, 571,882.95 and 115,015.39

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Solution

The fourth proportional to 381,252.57, 571,882.95 and 115,015.39 is: 172,524.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,252.57 : 571,882.95 = 115,015.39 : x
  2. Step 2: Convert to fraction form
    381,252.57/571,882.95 = 115,015.39/x
  3. Step 3: Cross multiply
    381,252.57x = 571,882.95 × 115,015.39
  4. Step 4: Simplify right side
    381,252.57x = 65,775,340,528.60
  5. Step 5: Solve for x
    x = 65,775,340,528.60/381,252.57
  6. Step 6: Final answer
    x = 172,524.32

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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.