Home / 442,819.20-664,228.80-143,321.70

Finding the Fourth Proportional to 442,819.20, 664,228.80 and 143,321.70

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Solution

The fourth proportional to 442,819.20, 664,228.80 and 143,321.70 is: 214,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,819.20 : 664,228.80 = 143,321.70 : x
  2. Step 2: Convert to fraction form
    442,819.20/664,228.80 = 143,321.70/x
  3. Step 3: Cross multiply
    442,819.20x = 664,228.80 × 143,321.70
  4. Step 4: Simplify right side
    442,819.20x = 95,198,400,804.96
  5. Step 5: Solve for x
    x = 95,198,400,804.96/442,819.20
  6. Step 6: Final answer
    x = 214,982.55

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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.