Home / 397,635.22-548,555.79-236,398.78

Finding the Fourth Proportional to 397,635.22, 548,555.79 and 236,398.78

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Solution

The fourth proportional to 397,635.22, 548,555.79 and 236,398.78 is: 326,122.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,635.22 : 548,555.79 = 236,398.78 : x
  2. Step 2: Convert to fraction form
    397,635.22/548,555.79 = 236,398.78/x
  3. Step 3: Cross multiply
    397,635.22x = 548,555.79 × 236,398.78
  4. Step 4: Simplify right side
    397,635.22x = 129,677,919,517.94
  5. Step 5: Solve for x
    x = 129,677,919,517.94/397,635.22
  6. Step 6: Final answer
    x = 326,122.82

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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.