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Finding the Fourth Proportional to 342,072.80, 512,234.40 and 252,843.20

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Solution

The fourth proportional to 342,072.80, 512,234.40 and 252,843.20 is: 378,618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,072.80 : 512,234.40 = 252,843.20 : x
  2. Step 2: Convert to fraction form
    342,072.80/512,234.40 = 252,843.20/x
  3. Step 3: Cross multiply
    342,072.80x = 512,234.40 × 252,843.20
  4. Step 4: Simplify right side
    342,072.80x = 129,514,984,846.08
  5. Step 5: Solve for x
    x = 129,514,984,846.08/342,072.80
  6. Step 6: Final answer
    x = 378,618.19

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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.