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Finding the Fourth Proportional to 432,857.70, 649,286.55 and 273,425.40

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Solution

The fourth proportional to 432,857.70, 649,286.55 and 273,425.40 is: 410,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,857.70 : 649,286.55 = 273,425.40 : x
  2. Step 2: Convert to fraction form
    432,857.70/649,286.55 = 273,425.40/x
  3. Step 3: Cross multiply
    432,857.70x = 649,286.55 × 273,425.40
  4. Step 4: Simplify right side
    432,857.70x = 177,531,434,648.37
  5. Step 5: Solve for x
    x = 177,531,434,648.37/432,857.70
  6. Step 6: Final answer
    x = 410,138.10

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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.