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Finding the Fourth Proportional to 230,086.60, 345,129.90 and 72,314.80

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Solution

The fourth proportional to 230,086.60, 345,129.90 and 72,314.80 is: 108,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,086.60 : 345,129.90 = 72,314.80 : x
  2. Step 2: Convert to fraction form
    230,086.60/345,129.90 = 72,314.80/x
  3. Step 3: Cross multiply
    230,086.60x = 345,129.90 × 72,314.80
  4. Step 4: Simplify right side
    230,086.60x = 24,957,999,692.52
  5. Step 5: Solve for x
    x = 24,957,999,692.52/230,086.60
  6. Step 6: Final answer
    x = 108,472.20

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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.