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Finding the Fourth Proportional to 221,486.30, 332,234.16 and 79,340.82

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Solution

The fourth proportional to 221,486.30, 332,234.16 and 79,340.82 is: 119,012.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,486.30 : 332,234.16 = 79,340.82 : x
  2. Step 2: Convert to fraction form
    221,486.30/332,234.16 = 79,340.82/x
  3. Step 3: Cross multiply
    221,486.30x = 332,234.16 × 79,340.82
  4. Step 4: Simplify right side
    221,486.30x = 26,359,729,143.01
  5. Step 5: Solve for x
    x = 26,359,729,143.01/221,486.30
  6. Step 6: Final answer
    x = 119,012.91

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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.