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Finding the Fourth Proportional to 276,680.60, 415,020.90 and 265,016.60

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Solution

The fourth proportional to 276,680.60, 415,020.90 and 265,016.60 is: 397,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,680.60 : 415,020.90 = 265,016.60 : x
  2. Step 2: Convert to fraction form
    276,680.60/415,020.90 = 265,016.60/x
  3. Step 3: Cross multiply
    276,680.60x = 415,020.90 × 265,016.60
  4. Step 4: Simplify right side
    276,680.60x = 109,987,427,846.94
  5. Step 5: Solve for x
    x = 109,987,427,846.94/276,680.60
  6. Step 6: Final answer
    x = 397,524.90

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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.