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Finding the Fourth Proportional to 445,121.56, 667,215.78 and 164,459.80

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Solution

The fourth proportional to 445,121.56, 667,215.78 and 164,459.80 is: 246,517.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,121.56 : 667,215.78 = 164,459.80 : x
  2. Step 2: Convert to fraction form
    445,121.56/667,215.78 = 164,459.80/x
  3. Step 3: Cross multiply
    445,121.56x = 667,215.78 × 164,459.80
  4. Step 4: Simplify right side
    445,121.56x = 109,730,173,735.64
  5. Step 5: Solve for x
    x = 109,730,173,735.64/445,121.56
  6. Step 6: Final answer
    x = 246,517.32

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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.