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Finding the Fourth Proportional to 220,658.10, 330,990.39 and 54,446.10

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Solution

The fourth proportional to 220,658.10, 330,990.39 and 54,446.10 is: 81,669.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,658.10 : 330,990.39 = 54,446.10 : x
  2. Step 2: Convert to fraction form
    220,658.10/330,990.39 = 54,446.10/x
  3. Step 3: Cross multiply
    220,658.10x = 330,990.39 × 54,446.10
  4. Step 4: Simplify right side
    220,658.10x = 18,021,135,872.98
  5. Step 5: Solve for x
    x = 18,021,135,872.98/220,658.10
  6. Step 6: Final answer
    x = 81,669.95

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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.