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Finding the Fourth Proportional to 273,286.55, 409,979.05 and 131,011.27

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Solution

The fourth proportional to 273,286.55, 409,979.05 and 131,011.27 is: 196,540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,286.55 : 409,979.05 = 131,011.27 : x
  2. Step 2: Convert to fraction form
    273,286.55/409,979.05 = 131,011.27/x
  3. Step 3: Cross multiply
    273,286.55x = 409,979.05 × 131,011.27
  4. Step 4: Simplify right side
    273,286.55x = 53,711,874,661.42
  5. Step 5: Solve for x
    x = 53,711,874,661.42/273,286.55
  6. Step 6: Final answer
    x = 196,540.50

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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.