Home / 398,860.88-598,296.52-132,621.38

Finding the Fourth Proportional to 398,860.88, 598,296.52 and 132,621.38

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Solution

The fourth proportional to 398,860.88, 598,296.52 and 132,621.38 is: 198,933.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,860.88 : 598,296.52 = 132,621.38 : x
  2. Step 2: Convert to fraction form
    398,860.88/598,296.52 = 132,621.38/x
  3. Step 3: Cross multiply
    398,860.88x = 598,296.52 × 132,621.38
  4. Step 4: Simplify right side
    398,860.88x = 79,346,912,914.92
  5. Step 5: Solve for x
    x = 79,346,912,914.92/398,860.88
  6. Step 6: Final answer
    x = 198,933.81

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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.