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Finding the Fourth Proportional to 543,609.70, 815,414.55 and 169,632.70

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Solution

The fourth proportional to 543,609.70, 815,414.55 and 169,632.70 is: 254,449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,609.70 : 815,414.55 = 169,632.70 : x
  2. Step 2: Convert to fraction form
    543,609.70/815,414.55 = 169,632.70/x
  3. Step 3: Cross multiply
    543,609.70x = 815,414.55 × 169,632.70
  4. Step 4: Simplify right side
    543,609.70x = 138,320,971,735.79
  5. Step 5: Solve for x
    x = 138,320,971,735.79/543,609.70
  6. Step 6: Final answer
    x = 254,449.05

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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.