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Finding the Fourth Proportional to 230,239.22, 345,341.97 and 72,512.78

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Solution

The fourth proportional to 230,239.22, 345,341.97 and 72,512.78 is: 108,763.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,239.22 : 345,341.97 = 72,512.78 : x
  2. Step 2: Convert to fraction form
    230,239.22/345,341.97 = 72,512.78/x
  3. Step 3: Cross multiply
    230,239.22x = 345,341.97 × 72,512.78
  4. Step 4: Simplify right side
    230,239.22x = 25,041,704,568.67
  5. Step 5: Solve for x
    x = 25,041,704,568.67/230,239.22
  6. Step 6: Final answer
    x = 108,763.85

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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.