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Finding the Fourth Proportional to 220,865.72, 331,350.49 and 71,100.41

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Solution

The fourth proportional to 220,865.72, 331,350.49 and 71,100.41 is: 106,667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,865.72 : 331,350.49 = 71,100.41 : x
  2. Step 2: Convert to fraction form
    220,865.72/331,350.49 = 71,100.41/x
  3. Step 3: Cross multiply
    220,865.72x = 331,350.49 × 71,100.41
  4. Step 4: Simplify right side
    220,865.72x = 23,559,154,035.95
  5. Step 5: Solve for x
    x = 23,559,154,035.95/220,865.72
  6. Step 6: Final answer
    x = 106,667.32

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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.