Home / 331,540.20-497,375.10-142,000.20

Finding the Fourth Proportional to 331,540.20, 497,375.10 and 142,000.20

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Solution

The fourth proportional to 331,540.20, 497,375.10 and 142,000.20 is: 213,028.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,540.20 : 497,375.10 = 142,000.20 : x
  2. Step 2: Convert to fraction form
    331,540.20/497,375.10 = 142,000.20/x
  3. Step 3: Cross multiply
    331,540.20x = 497,375.10 × 142,000.20
  4. Step 4: Simplify right side
    331,540.20x = 70,627,363,675.02
  5. Step 5: Solve for x
    x = 70,627,363,675.02/331,540.20
  6. Step 6: Final answer
    x = 213,028.05

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1.5x scale

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.