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Finding the Fourth Proportional to 445,006.20, 667,055.70 and 220,020.60

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Solution

The fourth proportional to 445,006.20, 667,055.70 and 220,020.60 is: 329,806.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,006.20 : 667,055.70 = 220,020.60 : x
  2. Step 2: Convert to fraction form
    445,006.20/667,055.70 = 220,020.60/x
  3. Step 3: Cross multiply
    445,006.20x = 667,055.70 × 220,020.60
  4. Step 4: Simplify right side
    445,006.20x = 146,765,995,347.42
  5. Step 5: Solve for x
    x = 146,765,995,347.42/445,006.20
  6. Step 6: Final answer
    x = 329,806.63

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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.