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Finding the Fourth Proportional to 221,687.04, 332,530.56 and 81,384.96

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Solution

The fourth proportional to 221,687.04, 332,530.56 and 81,384.96 is: 122,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,687.04 : 332,530.56 = 81,384.96 : x
  2. Step 2: Convert to fraction form
    221,687.04/332,530.56 = 81,384.96/x
  3. Step 3: Cross multiply
    221,687.04x = 332,530.56 × 81,384.96
  4. Step 4: Simplify right side
    221,687.04x = 27,062,986,324.38
  5. Step 5: Solve for x
    x = 27,062,986,324.38/221,687.04
  6. Step 6: Final answer
    x = 122,077.44

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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.