Home / 320,391.20-442,132.02-177,147.56

Finding the Fourth Proportional to 320,391.20, 442,132.02 and 177,147.56

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Solution

The fourth proportional to 320,391.20, 442,132.02 and 177,147.56 is: 244,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,391.20 : 442,132.02 = 177,147.56 : x
  2. Step 2: Convert to fraction form
    320,391.20/442,132.02 = 177,147.56/x
  3. Step 3: Cross multiply
    320,391.20x = 442,132.02 × 177,147.56
  4. Step 4: Simplify right side
    320,391.20x = 78,322,608,540.87
  5. Step 5: Solve for x
    x = 78,322,608,540.87/320,391.20
  6. Step 6: Final answer
    x = 244,459.30

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1.5x scale

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.