Home / 392,997.85-589,621.33-140,272.74

Finding the Fourth Proportional to 392,997.85, 589,621.33 and 140,272.74

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Solution

The fourth proportional to 392,997.85, 589,621.33 and 140,272.74 is: 210,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,997.85 : 589,621.33 = 140,272.74 : x
  2. Step 2: Convert to fraction form
    392,997.85/589,621.33 = 140,272.74/x
  3. Step 3: Cross multiply
    392,997.85x = 589,621.33 × 140,272.74
  4. Step 4: Simplify right side
    392,997.85x = 82,707,797,249.54
  5. Step 5: Solve for x
    x = 82,707,797,249.54/392,997.85
  6. Step 6: Final answer
    x = 210,453.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.