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Finding the Fourth Proportional to 206,958.20, 310,437.30 and 171,966.20

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Solution

The fourth proportional to 206,958.20, 310,437.30 and 171,966.20 is: 257,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,958.20 : 310,437.30 = 171,966.20 : x
  2. Step 2: Convert to fraction form
    206,958.20/310,437.30 = 171,966.20/x
  3. Step 3: Cross multiply
    206,958.20x = 310,437.30 × 171,966.20
  4. Step 4: Simplify right side
    206,958.20x = 53,384,722,819.26
  5. Step 5: Solve for x
    x = 53,384,722,819.26/206,958.20
  6. Step 6: Final answer
    x = 257,949.30

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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.