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Finding the Fourth Proportional to 230,662.20, 345,960.90 and 72,906.60

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Solution

The fourth proportional to 230,662.20, 345,960.90 and 72,906.60 is: 109,349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,662.20 : 345,960.90 = 72,906.60 : x
  2. Step 2: Convert to fraction form
    230,662.20/345,960.90 = 72,906.60/x
  3. Step 3: Cross multiply
    230,662.20x = 345,960.90 × 72,906.60
  4. Step 4: Simplify right side
    230,662.20x = 25,222,832,951.94
  5. Step 5: Solve for x
    x = 25,222,832,951.94/230,662.20
  6. Step 6: Final answer
    x = 109,349.66

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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.