Home / 724,102.20-1,086,147.90-218,662.20

Finding the Fourth Proportional to 724,102.20, 1,086,147.90 and 218,662.20

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Solution

The fourth proportional to 724,102.20, 1,086,147.90 and 218,662.20 is: 327,991.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,102.20 : 1,086,147.90 = 218,662.20 : x
  2. Step 2: Convert to fraction form
    724,102.20/1,086,147.90 = 218,662.20/x
  3. Step 3: Cross multiply
    724,102.20x = 1,086,147.90 × 218,662.20
  4. Step 4: Simplify right side
    724,102.20x = 237,499,489,339.38
  5. Step 5: Solve for x
    x = 237,499,489,339.38/724,102.20
  6. Step 6: Final answer
    x = 327,991.67

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Double scale
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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.