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Finding the Fourth Proportional to 392,676.37, 588,469.59 and 178,921.90

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Solution

The fourth proportional to 392,676.37, 588,469.59 and 178,921.90 is: 268,134.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,676.37 : 588,469.59 = 178,921.90 : x
  2. Step 2: Convert to fraction form
    392,676.37/588,469.59 = 178,921.90/x
  3. Step 3: Cross multiply
    392,676.37x = 588,469.59 × 178,921.90
  4. Step 4: Simplify right side
    392,676.37x = 105,290,094,560.47
  5. Step 5: Solve for x
    x = 105,290,094,560.47/392,676.37
  6. Step 6: Final answer
    x = 268,134.53

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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.