Home / 258,785.25-388,177.89-71,796.75

Finding the Fourth Proportional to 258,785.25, 388,177.89 and 71,796.75

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Solution

The fourth proportional to 258,785.25, 388,177.89 and 71,796.75 is: 107,695.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,785.25 : 388,177.89 = 71,796.75 : x
  2. Step 2: Convert to fraction form
    258,785.25/388,177.89 = 71,796.75/x
  3. Step 3: Cross multiply
    258,785.25x = 388,177.89 × 71,796.75
  4. Step 4: Simplify right side
    258,785.25x = 27,869,910,923.86
  5. Step 5: Solve for x
    x = 27,869,910,923.86/258,785.25
  6. Step 6: Final answer
    x = 107,695.13

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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.