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Finding the Fourth Proportional to 250,314.57, 375,494.92 and 81,835.79

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Solution

The fourth proportional to 250,314.57, 375,494.92 and 81,835.79 is: 122,761.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,314.57 : 375,494.92 = 81,835.79 : x
  2. Step 2: Convert to fraction form
    250,314.57/375,494.92 = 81,835.79/x
  3. Step 3: Cross multiply
    250,314.57x = 375,494.92 × 81,835.79
  4. Step 4: Simplify right side
    250,314.57x = 30,728,921,797.45
  5. Step 5: Solve for x
    x = 30,728,921,797.45/250,314.57
  6. Step 6: Final answer
    x = 122,761.22

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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.