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Finding the Fourth Proportional to 218,045.40, 327,276.90 and 112,939.80

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Solution

The fourth proportional to 218,045.40, 327,276.90 and 112,939.80 is: 169,517.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,045.40 : 327,276.90 = 112,939.80 : x
  2. Step 2: Convert to fraction form
    218,045.40/327,276.90 = 112,939.80/x
  3. Step 3: Cross multiply
    218,045.40x = 327,276.90 × 112,939.80
  4. Step 4: Simplify right side
    218,045.40x = 36,962,587,630.62
  5. Step 5: Solve for x
    x = 36,962,587,630.62/218,045.40
  6. Step 6: Final answer
    x = 169,517.85

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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.