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Finding the Fourth Proportional to 221,949.98, 332,958.12 and 81,697.94

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Solution

The fourth proportional to 221,949.98, 332,958.12 and 81,697.94 is: 122,559.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,949.98 : 332,958.12 = 81,697.94 : x
  2. Step 2: Convert to fraction form
    221,949.98/332,958.12 = 81,697.94/x
  3. Step 3: Cross multiply
    221,949.98x = 332,958.12 × 81,697.94
  4. Step 4: Simplify right side
    221,949.98x = 27,201,992,510.27
  5. Step 5: Solve for x
    x = 27,201,992,510.27/221,949.98
  6. Step 6: Final answer
    x = 122,559.11

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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.