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Finding the Fourth Proportional to 221,957.20, 332,960.10 and 214,958.80

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Solution

The fourth proportional to 221,957.20, 332,960.10 and 214,958.80 is: 322,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,957.20 : 332,960.10 = 214,958.80 : x
  2. Step 2: Convert to fraction form
    221,957.20/332,960.10 = 214,958.80/x
  3. Step 3: Cross multiply
    221,957.20x = 332,960.10 × 214,958.80
  4. Step 4: Simplify right side
    221,957.20x = 71,572,703,543.88
  5. Step 5: Solve for x
    x = 71,572,703,543.88/221,957.20
  6. Step 6: Final answer
    x = 322,461.73

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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.