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Finding the Fourth Proportional to 230,121.76, 345,236.97 and 72,350.21

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Solution

The fourth proportional to 230,121.76, 345,236.97 and 72,350.21 is: 108,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,121.76 : 345,236.97 = 72,350.21 : x
  2. Step 2: Convert to fraction form
    230,121.76/345,236.97 = 72,350.21/x
  3. Step 3: Cross multiply
    230,121.76x = 345,236.97 × 72,350.21
  4. Step 4: Simplify right side
    230,121.76x = 24,977,968,006.70
  5. Step 5: Solve for x
    x = 24,977,968,006.70/230,121.76
  6. Step 6: Final answer
    x = 108,542.40

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1.5x scale

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.