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Finding the Fourth Proportional to 444,665.18, 667,016.22 and 129,122.09

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Solution

The fourth proportional to 444,665.18, 667,016.22 and 129,122.09 is: 193,688.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,665.18 : 667,016.22 = 129,122.09 : x
  2. Step 2: Convert to fraction form
    444,665.18/667,016.22 = 129,122.09/x
  3. Step 3: Cross multiply
    444,665.18x = 667,016.22 × 129,122.09
  4. Step 4: Simplify right side
    444,665.18x = 86,126,528,390.30
  5. Step 5: Solve for x
    x = 86,126,528,390.30/444,665.18
  6. Step 6: Final answer
    x = 193,688.49

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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.