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Finding the Fourth Proportional to 203,484.20, 280,811.46 and 112,843.88

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Solution

The fourth proportional to 203,484.20, 280,811.46 and 112,843.88 is: 155,726.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,484.20 : 280,811.46 = 112,843.88 : x
  2. Step 2: Convert to fraction form
    203,484.20/280,811.46 = 112,843.88/x
  3. Step 3: Cross multiply
    203,484.20x = 280,811.46 × 112,843.88
  4. Step 4: Simplify right side
    203,484.20x = 31,687,854,694.86
  5. Step 5: Solve for x
    x = 31,687,854,694.86/203,484.20
  6. Step 6: Final answer
    x = 155,726.36

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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.