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Finding the Fourth Proportional to 221,716.77, 332,488.86 and 71,920.83

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Solution

The fourth proportional to 221,716.77, 332,488.86 and 71,920.83 is: 107,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,716.77 : 332,488.86 = 71,920.83 : x
  2. Step 2: Convert to fraction form
    221,716.77/332,488.86 = 71,920.83/x
  3. Step 3: Cross multiply
    221,716.77x = 332,488.86 × 71,920.83
  4. Step 4: Simplify right side
    221,716.77x = 23,912,874,776.95
  5. Step 5: Solve for x
    x = 23,912,874,776.95/221,716.77
  6. Step 6: Final answer
    x = 107,853.25

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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.