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Finding the Fourth Proportional to 276,279.39, 414,422.10 and 76,601.43

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Solution

The fourth proportional to 276,279.39, 414,422.10 and 76,601.43 is: 114,902.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,279.39 : 414,422.10 = 76,601.43 : x
  2. Step 2: Convert to fraction form
    276,279.39/414,422.10 = 76,601.43/x
  3. Step 3: Cross multiply
    276,279.39x = 414,422.10 × 76,601.43
  4. Step 4: Simplify right side
    276,279.39x = 31,745,325,483.60
  5. Step 5: Solve for x
    x = 31,745,325,483.60/276,279.39
  6. Step 6: Final answer
    x = 114,902.98

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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.