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Finding the Fourth Proportional to 221,982.04, 332,978.46 and 72,222.76

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Solution

The fourth proportional to 221,982.04, 332,978.46 and 72,222.76 is: 108,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,982.04 : 332,978.46 = 72,222.76 : x
  2. Step 2: Convert to fraction form
    221,982.04/332,978.46 = 72,222.76/x
  3. Step 3: Cross multiply
    221,982.04x = 332,978.46 × 72,222.76
  4. Step 4: Simplify right side
    221,982.04x = 24,048,623,401.75
  5. Step 5: Solve for x
    x = 24,048,623,401.75/221,982.04
  6. Step 6: Final answer
    x = 108,335.90

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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.