Home / 398,887.53-598,442-221,519.09

Finding the Fourth Proportional to 398,887.53, 598,442 and 221,519.09

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Solution

The fourth proportional to 398,887.53, 598,442 and 221,519.09 is: 332,340.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,887.53 : 598,442 = 221,519.09 : x
  2. Step 2: Convert to fraction form
    398,887.53/598,442 = 221,519.09/x
  3. Step 3: Cross multiply
    398,887.53x = 598,442 × 221,519.09
  4. Step 4: Simplify right side
    398,887.53x = 132,566,327,257.78
  5. Step 5: Solve for x
    x = 132,566,327,257.78/398,887.53
  6. Step 6: Final answer
    x = 332,340.11

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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.