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Finding the Fourth Proportional to 230,412.73, 345,586.29 and 72,620.68

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Solution

The fourth proportional to 230,412.73, 345,586.29 and 72,620.68 is: 108,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,412.73 : 345,586.29 = 72,620.68 : x
  2. Step 2: Convert to fraction form
    230,412.73/345,586.29 = 72,620.68/x
  3. Step 3: Cross multiply
    230,412.73x = 345,586.29 × 72,620.68
  4. Step 4: Simplify right side
    230,412.73x = 25,096,711,378.48
  5. Step 5: Solve for x
    x = 25,096,711,378.48/230,412.73
  6. Step 6: Final answer
    x = 108,920.68

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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.