Home / 220,081.22-329,997.90-70,286.30

Finding the Fourth Proportional to 220,081.22, 329,997.90 and 70,286.30

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Solution

The fourth proportional to 220,081.22, 329,997.90 and 70,286.30 is: 105,389.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,081.22 : 329,997.90 = 70,286.30 : x
  2. Step 2: Convert to fraction form
    220,081.22/329,997.90 = 70,286.30/x
  3. Step 3: Cross multiply
    220,081.22x = 329,997.90 × 70,286.30
  4. Step 4: Simplify right side
    220,081.22x = 23,194,332,487.34
  5. Step 5: Solve for x
    x = 23,194,332,487.34/220,081.22
  6. Step 6: Final answer
    x = 105,389.87

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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.