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Finding the Fourth Proportional to 251,819.67, 347,510.52 and 138,642.42

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Solution

The fourth proportional to 251,819.67, 347,510.52 and 138,642.42 is: 191,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,819.67 : 347,510.52 = 138,642.42 : x
  2. Step 2: Convert to fraction form
    251,819.67/347,510.52 = 138,642.42/x
  3. Step 3: Cross multiply
    251,819.67x = 347,510.52 × 138,642.42
  4. Step 4: Simplify right side
    251,819.67x = 48,179,699,468.26
  5. Step 5: Solve for x
    x = 48,179,699,468.26/251,819.67
  6. Step 6: Final answer
    x = 191,326.20

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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.