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Finding the Fourth Proportional to 276,398.39, 414,627.21 and 76,719.62

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Solution

The fourth proportional to 276,398.39, 414,627.21 and 76,719.62 is: 115,087.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,398.39 : 414,627.21 = 76,719.62 : x
  2. Step 2: Convert to fraction form
    276,398.39/414,627.21 = 76,719.62/x
  3. Step 3: Cross multiply
    276,398.39x = 414,627.21 × 76,719.62
  4. Step 4: Simplify right side
    276,398.39x = 31,810,039,919.72
  5. Step 5: Solve for x
    x = 31,810,039,919.72/276,398.39
  6. Step 6: Final answer
    x = 115,087.65

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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.