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Finding the Fourth Proportional to 221,446.65, 332,169.98 and 121,913.85

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Solution

The fourth proportional to 221,446.65, 332,169.98 and 121,913.85 is: 182,870.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,446.65 : 332,169.98 = 121,913.85 : x
  2. Step 2: Convert to fraction form
    221,446.65/332,169.98 = 121,913.85/x
  3. Step 3: Cross multiply
    221,446.65x = 332,169.98 × 121,913.85
  4. Step 4: Simplify right side
    221,446.65x = 40,496,120,506.65
  5. Step 5: Solve for x
    x = 40,496,120,506.65/221,446.65
  6. Step 6: Final answer
    x = 182,870.78

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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.