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Finding the Fourth Proportional to 221,715.57, 332,487.48 and 71,919.84

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Solution

The fourth proportional to 221,715.57, 332,487.48 and 71,919.84 is: 107,851.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,715.57 : 332,487.48 = 71,919.84 : x
  2. Step 2: Convert to fraction form
    221,715.57/332,487.48 = 71,919.84/x
  3. Step 3: Cross multiply
    221,715.57x = 332,487.48 × 71,919.84
  4. Step 4: Simplify right side
    221,715.57x = 23,912,446,363.60
  5. Step 5: Solve for x
    x = 23,912,446,363.60/221,715.57
  6. Step 6: Final answer
    x = 107,851.90

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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.