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Finding the Fourth Proportional to 227,717.20, 341,447.80 and 87,480.40

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Solution

The fourth proportional to 227,717.20, 341,447.80 and 87,480.40 is: 131,171.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,717.20 : 341,447.80 = 87,480.40 : x
  2. Step 2: Convert to fraction form
    227,717.20/341,447.80 = 87,480.40/x
  3. Step 3: Cross multiply
    227,717.20x = 341,447.80 × 87,480.40
  4. Step 4: Simplify right side
    227,717.20x = 29,869,990,123.12
  5. Step 5: Solve for x
    x = 29,869,990,123.12/227,717.20
  6. Step 6: Final answer
    x = 131,171.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.