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Finding the Fourth Proportional to 230,155.80, 345,233.70 and 72,432.60

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Solution

The fourth proportional to 230,155.80, 345,233.70 and 72,432.60 is: 108,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,155.80 : 345,233.70 = 72,432.60 : x
  2. Step 2: Convert to fraction form
    230,155.80/345,233.70 = 72,432.60/x
  3. Step 3: Cross multiply
    230,155.80x = 345,233.70 × 72,432.60
  4. Step 4: Simplify right side
    230,155.80x = 25,006,174,498.62
  5. Step 5: Solve for x
    x = 25,006,174,498.62/230,155.80
  6. Step 6: Final answer
    x = 108,648.90

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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.