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Finding the Fourth Proportional to 397,793.52, 548,959.55 and 216,506.61

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Solution

The fourth proportional to 397,793.52, 548,959.55 and 216,506.61 is: 298,781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,793.52 : 548,959.55 = 216,506.61 : x
  2. Step 2: Convert to fraction form
    397,793.52/548,959.55 = 216,506.61/x
  3. Step 3: Cross multiply
    397,793.52x = 548,959.55 × 216,506.61
  4. Step 4: Simplify right side
    397,793.52x = 118,853,370,115.09
  5. Step 5: Solve for x
    x = 118,853,370,115.09/397,793.52
  6. Step 6: Final answer
    x = 298,781.56

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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.