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Finding the Fourth Proportional to 381,434.58, 571,929.39 and 115,115.22

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Solution

The fourth proportional to 381,434.58, 571,929.39 and 115,115.22 is: 172,605.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,434.58 : 571,929.39 = 115,115.22 : x
  2. Step 2: Convert to fraction form
    381,434.58/571,929.39 = 115,115.22/x
  3. Step 3: Cross multiply
    381,434.58x = 571,929.39 × 115,115.22
  4. Step 4: Simplify right side
    381,434.58x = 65,837,777,554.32
  5. Step 5: Solve for x
    x = 65,837,777,554.32/381,434.58
  6. Step 6: Final answer
    x = 172,605.69

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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.