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Finding the Fourth Proportional to 251,752.91, 347,418.83 and 138,575.66

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Solution

The fourth proportional to 251,752.91, 347,418.83 and 138,575.66 is: 191,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,752.91 : 347,418.83 = 138,575.66 : x
  2. Step 2: Convert to fraction form
    251,752.91/347,418.83 = 138,575.66/x
  3. Step 3: Cross multiply
    251,752.91x = 347,418.83 × 138,575.66
  4. Step 4: Simplify right side
    251,752.91x = 48,143,791,233.71
  5. Step 5: Solve for x
    x = 48,143,791,233.71/251,752.91
  6. Step 6: Final answer
    x = 191,234.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.