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Finding the Fourth Proportional to 342,073.80, 512,235.90 and 252,844.20

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Solution

The fourth proportional to 342,073.80, 512,235.90 and 252,844.20 is: 378,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,073.80 : 512,235.90 = 252,844.20 : x
  2. Step 2: Convert to fraction form
    342,073.80/512,235.90 = 252,844.20/x
  3. Step 3: Cross multiply
    342,073.80x = 512,235.90 × 252,844.20
  4. Step 4: Simplify right side
    342,073.80x = 129,515,876,346.78
  5. Step 5: Solve for x
    x = 129,515,876,346.78/342,073.80
  6. Step 6: Final answer
    x = 378,619.69

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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.