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Finding the Fourth Proportional to 276,695.97, 415,058.94 and 87,171.27

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Solution

The fourth proportional to 276,695.97, 415,058.94 and 87,171.27 is: 130,761.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,695.97 : 415,058.94 = 87,171.27 : x
  2. Step 2: Convert to fraction form
    276,695.97/415,058.94 = 87,171.27/x
  3. Step 3: Cross multiply
    276,695.97x = 415,058.94 × 87,171.27
  4. Step 4: Simplify right side
    276,695.97x = 36,181,214,924.65
  5. Step 5: Solve for x
    x = 36,181,214,924.65/276,695.97
  6. Step 6: Final answer
    x = 130,761.63

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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.