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Finding the Fourth Proportional to 443,155.20, 664,279.20 and 218,169.60

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Solution

The fourth proportional to 443,155.20, 664,279.20 and 218,169.60 is: 327,031.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,155.20 : 664,279.20 = 218,169.60 : x
  2. Step 2: Convert to fraction form
    443,155.20/664,279.20 = 218,169.60/x
  3. Step 3: Cross multiply
    443,155.20x = 664,279.20 × 218,169.60
  4. Step 4: Simplify right side
    443,155.20x = 144,925,527,352.32
  5. Step 5: Solve for x
    x = 144,925,527,352.32/443,155.20
  6. Step 6: Final answer
    x = 327,031.09

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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.