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Finding the Fourth Proportional to 392,481.40, 588,727.50 and 111,998.60

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Solution

The fourth proportional to 392,481.40, 588,727.50 and 111,998.60 is: 167,999.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,481.40 : 588,727.50 = 111,998.60 : x
  2. Step 2: Convert to fraction form
    392,481.40/588,727.50 = 111,998.60/x
  3. Step 3: Cross multiply
    392,481.40x = 588,727.50 × 111,998.60
  4. Step 4: Simplify right side
    392,481.40x = 65,936,655,781.50
  5. Step 5: Solve for x
    x = 65,936,655,781.50/392,481.40
  6. Step 6: Final answer
    x = 167,999.44

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1.5x scale

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.