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Finding the Fourth Proportional to 221,747.82, 332,752.95 and 81,604.86

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Solution

The fourth proportional to 221,747.82, 332,752.95 and 81,604.86 is: 122,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,747.82 : 332,752.95 = 81,604.86 : x
  2. Step 2: Convert to fraction form
    221,747.82/332,752.95 = 81,604.86/x
  3. Step 3: Cross multiply
    221,747.82x = 332,752.95 × 81,604.86
  4. Step 4: Simplify right side
    221,747.82x = 27,154,257,899.34
  5. Step 5: Solve for x
    x = 27,154,257,899.34/221,747.82
  6. Step 6: Final answer
    x = 122,455.58

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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.