Home / 393,195.20-589,642.91-140,428.49

Finding the Fourth Proportional to 393,195.20, 589,642.91 and 140,428.49

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Solution

The fourth proportional to 393,195.20, 589,642.91 and 140,428.49 is: 210,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,195.20 : 589,642.91 = 140,428.49 : x
  2. Step 2: Convert to fraction form
    393,195.20/589,642.91 = 140,428.49/x
  3. Step 3: Cross multiply
    393,195.20x = 589,642.91 × 140,428.49
  4. Step 4: Simplify right side
    393,195.20x = 82,802,659,840.15
  5. Step 5: Solve for x
    x = 82,802,659,840.15/393,195.20
  6. Step 6: Final answer
    x = 210,589.20

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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.