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Finding the Fourth Proportional to 276,613.20, 414,863.10 and 76,883.40

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Solution

The fourth proportional to 276,613.20, 414,863.10 and 76,883.40 is: 115,309.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,613.20 : 414,863.10 = 76,883.40 : x
  2. Step 2: Convert to fraction form
    276,613.20/414,863.10 = 76,883.40/x
  3. Step 3: Cross multiply
    276,613.20x = 414,863.10 × 76,883.40
  4. Step 4: Simplify right side
    276,613.20x = 31,896,085,662.54
  5. Step 5: Solve for x
    x = 31,896,085,662.54/276,613.20
  6. Step 6: Final answer
    x = 115,309.34

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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.