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Finding the Fourth Proportional to 397,644.20, 548,732.57 and 216,356.86

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Solution

The fourth proportional to 397,644.20, 548,732.57 and 216,356.86 is: 298,563.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,644.20 : 548,732.57 = 216,356.86 : x
  2. Step 2: Convert to fraction form
    397,644.20/548,732.57 = 216,356.86/x
  3. Step 3: Cross multiply
    397,644.20x = 548,732.57 × 216,356.86
  4. Step 4: Simplify right side
    397,644.20x = 118,722,053,371.31
  5. Step 5: Solve for x
    x = 118,722,053,371.31/397,644.20
  6. Step 6: Final answer
    x = 298,563.53

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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.