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Finding the Fourth Proportional to 203,489.60, 305,234.40 and 132,630.80

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Solution

The fourth proportional to 203,489.60, 305,234.40 and 132,630.80 is: 198,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,489.60 : 305,234.40 = 132,630.80 : x
  2. Step 2: Convert to fraction form
    203,489.60/305,234.40 = 132,630.80/x
  3. Step 3: Cross multiply
    203,489.60x = 305,234.40 × 132,630.80
  4. Step 4: Simplify right side
    203,489.60x = 40,483,482,659.52
  5. Step 5: Solve for x
    x = 40,483,482,659.52/203,489.60
  6. Step 6: Final answer
    x = 198,946.20

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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.