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Finding the Fourth Proportional to 221,650.72, 332,405.60 and 71,855.84

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Solution

The fourth proportional to 221,650.72, 332,405.60 and 71,855.84 is: 107,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,650.72 : 332,405.60 = 71,855.84 : x
  2. Step 2: Convert to fraction form
    221,650.72/332,405.60 = 71,855.84/x
  3. Step 3: Cross multiply
    221,650.72x = 332,405.60 × 71,855.84
  4. Step 4: Simplify right side
    221,650.72x = 23,885,283,608.70
  5. Step 5: Solve for x
    x = 23,885,283,608.70/221,650.72
  6. Step 6: Final answer
    x = 107,760.91

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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.