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Finding the Fourth Proportional to 247,659.64, 341,781.78 and 140,215.48

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Solution

The fourth proportional to 247,659.64, 341,781.78 and 140,215.48 is: 193,503.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,659.64 : 341,781.78 = 140,215.48 : x
  2. Step 2: Convert to fraction form
    247,659.64/341,781.78 = 140,215.48/x
  3. Step 3: Cross multiply
    247,659.64x = 341,781.78 × 140,215.48
  4. Step 4: Simplify right side
    247,659.64x = 47,923,096,337.95
  5. Step 5: Solve for x
    x = 47,923,096,337.95/247,659.64
  6. Step 6: Final answer
    x = 193,503.86

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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.