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Finding the Fourth Proportional to 218,850.87, 328,276.32 and 169,003.68

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Solution

The fourth proportional to 218,850.87, 328,276.32 and 169,003.68 is: 253,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,850.87 : 328,276.32 = 169,003.68 : x
  2. Step 2: Convert to fraction form
    218,850.87/328,276.32 = 169,003.68/x
  3. Step 3: Cross multiply
    218,850.87x = 328,276.32 × 169,003.68
  4. Step 4: Simplify right side
    218,850.87x = 55,479,906,136.86
  5. Step 5: Solve for x
    x = 55,479,906,136.86/218,850.87
  6. Step 6: Final answer
    x = 253,505.53

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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.