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Finding the Fourth Proportional to 445,640.20, 667,553.10 and 276,641.80

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Solution

The fourth proportional to 445,640.20, 667,553.10 and 276,641.80 is: 414,399.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,640.20 : 667,553.10 = 276,641.80 : x
  2. Step 2: Convert to fraction form
    445,640.20/667,553.10 = 276,641.80/x
  3. Step 3: Cross multiply
    445,640.20x = 667,553.10 × 276,641.80
  4. Step 4: Simplify right side
    445,640.20x = 184,673,091,179.58
  5. Step 5: Solve for x
    x = 184,673,091,179.58/445,640.20
  6. Step 6: Final answer
    x = 414,399.53

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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.