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Finding the Fourth Proportional to 251,656, 347,287.68 and 138,481.24

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Solution

The fourth proportional to 251,656, 347,287.68 and 138,481.24 is: 191,105.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,656 : 347,287.68 = 138,481.24 : x
  2. Step 2: Convert to fraction form
    251,656/347,287.68 = 138,481.24/x
  3. Step 3: Cross multiply
    251,656x = 347,287.68 × 138,481.24
  4. Step 4: Simplify right side
    251,656x = 48,092,828,563.12
  5. Step 5: Solve for x
    x = 48,092,828,563.12/251,656
  6. Step 6: Final answer
    x = 191,105.43

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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.