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Finding the Fourth Proportional to 445,240.80, 667,861.20 and 178,864.20

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Solution

The fourth proportional to 445,240.80, 667,861.20 and 178,864.20 is: 268,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,240.80 : 667,861.20 = 178,864.20 : x
  2. Step 2: Convert to fraction form
    445,240.80/667,861.20 = 178,864.20/x
  3. Step 3: Cross multiply
    445,240.80x = 667,861.20 × 178,864.20
  4. Step 4: Simplify right side
    445,240.80x = 119,456,459,249.04
  5. Step 5: Solve for x
    x = 119,456,459,249.04/445,240.80
  6. Step 6: Final answer
    x = 268,296.30

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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.