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Finding the Fourth Proportional to 220,632.27, 330,882.44 and 80,358.09

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Solution

The fourth proportional to 220,632.27, 330,882.44 and 80,358.09 is: 120,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,632.27 : 330,882.44 = 80,358.09 : x
  2. Step 2: Convert to fraction form
    220,632.27/330,882.44 = 80,358.09/x
  3. Step 3: Cross multiply
    220,632.27x = 330,882.44 × 80,358.09
  4. Step 4: Simplify right side
    220,632.27x = 26,589,080,491.15
  5. Step 5: Solve for x
    x = 26,589,080,491.15/220,632.27
  6. Step 6: Final answer
    x = 120,513.11

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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.