Home / 320,716.54-442,296.41-275,380.30

Finding the Fourth Proportional to 320,716.54, 442,296.41 and 275,380.30

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Solution

The fourth proportional to 320,716.54, 442,296.41 and 275,380.30 is: 379,773.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,716.54 : 442,296.41 = 275,380.30 : x
  2. Step 2: Convert to fraction form
    320,716.54/442,296.41 = 275,380.30/x
  3. Step 3: Cross multiply
    320,716.54x = 442,296.41 × 275,380.30
  4. Step 4: Simplify right side
    320,716.54x = 121,799,718,074.72
  5. Step 5: Solve for x
    x = 121,799,718,074.72/320,716.54
  6. Step 6: Final answer
    x = 379,773.73

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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.