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Finding the Fourth Proportional to 397,630.25, 548,732.17 and 216,343.52

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Solution

The fourth proportional to 397,630.25, 548,732.17 and 216,343.52 is: 298,555.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,630.25 : 548,732.17 = 216,343.52 : x
  2. Step 2: Convert to fraction form
    397,630.25/548,732.17 = 216,343.52/x
  3. Step 3: Cross multiply
    397,630.25x = 548,732.17 × 216,343.52
  4. Step 4: Simplify right side
    397,630.25x = 118,714,649,195.04
  5. Step 5: Solve for x
    x = 118,714,649,195.04/397,630.25
  6. Step 6: Final answer
    x = 298,555.38

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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.