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Finding the Fourth Proportional to 251,658.01, 347,287.92 and 138,480.76

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Solution

The fourth proportional to 251,658.01, 347,287.92 and 138,480.76 is: 191,103.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,658.01 : 347,287.92 = 138,480.76 : x
  2. Step 2: Convert to fraction form
    251,658.01/347,287.92 = 138,480.76/x
  3. Step 3: Cross multiply
    251,658.01x = 347,287.92 × 138,480.76
  4. Step 4: Simplify right side
    251,658.01x = 48,092,693,363.98
  5. Step 5: Solve for x
    x = 48,092,693,363.98/251,658.01
  6. Step 6: Final answer
    x = 191,103.37

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1.5x scale

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.