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Finding the Fourth Proportional to 276,112.22, 414,122.18 and 76,452.78

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Solution

The fourth proportional to 276,112.22, 414,122.18 and 76,452.78 is: 114,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,112.22 : 414,122.18 = 76,452.78 : x
  2. Step 2: Convert to fraction form
    276,112.22/414,122.18 = 76,452.78/x
  3. Step 3: Cross multiply
    276,112.22x = 414,122.18 × 76,452.78
  4. Step 4: Simplify right side
    276,112.22x = 31,660,793,147.10
  5. Step 5: Solve for x
    x = 31,660,793,147.10/276,112.22
  6. Step 6: Final answer
    x = 114,666.40

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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.