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Finding the Fourth Proportional to 397,238.56, 548,191.56 and 215,951.92

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Solution

The fourth proportional to 397,238.56, 548,191.56 and 215,951.92 is: 298,014.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,238.56 : 548,191.56 = 215,951.92 : x
  2. Step 2: Convert to fraction form
    397,238.56/548,191.56 = 215,951.92/x
  3. Step 3: Cross multiply
    397,238.56x = 548,191.56 × 215,951.92
  4. Step 4: Simplify right side
    397,238.56x = 118,383,019,909.80
  5. Step 5: Solve for x
    x = 118,383,019,909.80/397,238.56
  6. Step 6: Final answer
    x = 298,014.93

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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.