Home / 442,821.70-664,232.55-143,324.20

Finding the Fourth Proportional to 442,821.70, 664,232.55 and 143,324.20

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Solution

The fourth proportional to 442,821.70, 664,232.55 and 143,324.20 is: 214,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,821.70 : 664,232.55 = 143,324.20 : x
  2. Step 2: Convert to fraction form
    442,821.70/664,232.55 = 143,324.20/x
  3. Step 3: Cross multiply
    442,821.70x = 664,232.55 × 143,324.20
  4. Step 4: Simplify right side
    442,821.70x = 95,200,598,842.71
  5. Step 5: Solve for x
    x = 95,200,598,842.71/442,821.70
  6. Step 6: Final answer
    x = 214,986.30

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Similar ratio
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1.5x scale

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.