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Finding the Fourth Proportional to 392,951.50, 542,273.10 and 214,103.50

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Solution

The fourth proportional to 392,951.50, 542,273.10 and 214,103.50 is: 295,462.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,951.50 : 542,273.10 = 214,103.50 : x
  2. Step 2: Convert to fraction form
    392,951.50/542,273.10 = 214,103.50/x
  3. Step 3: Cross multiply
    392,951.50x = 542,273.10 × 214,103.50
  4. Step 4: Simplify right side
    392,951.50x = 116,102,568,665.85
  5. Step 5: Solve for x
    x = 116,102,568,665.85/392,951.50
  6. Step 6: Final answer
    x = 295,462.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.