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Finding the Fourth Proportional to 392,771.80, 588,768.90 and 192,928.60

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Solution

The fourth proportional to 392,771.80, 588,768.90 and 192,928.60 is: 289,201.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,771.80 : 588,768.90 = 192,928.60 : x
  2. Step 2: Convert to fraction form
    392,771.80/588,768.90 = 192,928.60/x
  3. Step 3: Cross multiply
    392,771.80x = 588,768.90 × 192,928.60
  4. Step 4: Simplify right side
    392,771.80x = 113,590,359,600.54
  5. Step 5: Solve for x
    x = 113,590,359,600.54/392,771.80
  6. Step 6: Final answer
    x = 289,201.92

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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.