Home / 398,860.20-598,160.70-132,575.40

Finding the Fourth Proportional to 398,860.20, 598,160.70 and 132,575.40

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Solution

The fourth proportional to 398,860.20, 598,160.70 and 132,575.40 is: 198,820.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,860.20 : 598,160.70 = 132,575.40 : x
  2. Step 2: Convert to fraction form
    398,860.20/598,160.70 = 132,575.40/x
  3. Step 3: Cross multiply
    398,860.20x = 598,160.70 × 132,575.40
  4. Step 4: Simplify right side
    398,860.20x = 79,301,394,066.78
  5. Step 5: Solve for x
    x = 79,301,394,066.78/398,860.20
  6. Step 6: Final answer
    x = 198,820.02

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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.