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Finding the Fourth Proportional to 220,771, 331,205.86 and 80,529.62

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Solution

The fourth proportional to 220,771, 331,205.86 and 80,529.62 is: 120,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,771 : 331,205.86 = 80,529.62 : x
  2. Step 2: Convert to fraction form
    220,771/331,205.86 = 80,529.62/x
  3. Step 3: Cross multiply
    220,771x = 331,205.86 × 80,529.62
  4. Step 4: Simplify right side
    220,771x = 26,671,882,047.57
  5. Step 5: Solve for x
    x = 26,671,882,047.57/220,771
  6. Step 6: Final answer
    x = 120,812.43

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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.