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Finding the Fourth Proportional to 392,377.50, 588,571.79 and 111,894.75

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Solution

The fourth proportional to 392,377.50, 588,571.79 and 111,894.75 is: 167,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,377.50 : 588,571.79 = 111,894.75 : x
  2. Step 2: Convert to fraction form
    392,377.50/588,571.79 = 111,894.75/x
  3. Step 3: Cross multiply
    392,377.50x = 588,571.79 × 111,894.75
  4. Step 4: Simplify right side
    392,377.50x = 65,858,092,739.63
  5. Step 5: Solve for x
    x = 65,858,092,739.63/392,377.50
  6. Step 6: Final answer
    x = 167,843.70

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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.