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Finding the Fourth Proportional to 221,439.53, 332,212.04 and 71,679.84

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Solution

The fourth proportional to 221,439.53, 332,212.04 and 71,679.84 is: 107,536.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,439.53 : 332,212.04 = 71,679.84 : x
  2. Step 2: Convert to fraction form
    221,439.53/332,212.04 = 71,679.84/x
  3. Step 3: Cross multiply
    221,439.53x = 332,212.04 × 71,679.84
  4. Step 4: Simplify right side
    221,439.53x = 23,812,905,514.87
  5. Step 5: Solve for x
    x = 23,812,905,514.87/221,439.53
  6. Step 6: Final answer
    x = 107,536.83

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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.