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Finding the Fourth Proportional to 342,053.80, 512,205.90 and 252,824.20

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Solution

The fourth proportional to 342,053.80, 512,205.90 and 252,824.20 is: 378,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,053.80 : 512,205.90 = 252,824.20 : x
  2. Step 2: Convert to fraction form
    342,053.80/512,205.90 = 252,824.20/x
  3. Step 3: Cross multiply
    342,053.80x = 512,205.90 × 252,824.20
  4. Step 4: Simplify right side
    342,053.80x = 129,498,046,902.78
  5. Step 5: Solve for x
    x = 129,498,046,902.78/342,053.80
  6. Step 6: Final answer
    x = 378,589.70

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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.