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Finding the Fourth Proportional to 206,029.20, 309,043.80 and 171,037.20

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Solution

The fourth proportional to 206,029.20, 309,043.80 and 171,037.20 is: 256,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,029.20 : 309,043.80 = 171,037.20 : x
  2. Step 2: Convert to fraction form
    206,029.20/309,043.80 = 171,037.20/x
  3. Step 3: Cross multiply
    206,029.20x = 309,043.80 × 171,037.20
  4. Step 4: Simplify right side
    206,029.20x = 52,857,986,229.36
  5. Step 5: Solve for x
    x = 52,857,986,229.36/206,029.20
  6. Step 6: Final answer
    x = 256,555.80

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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.