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Finding the Fourth Proportional to 339,272.20, 508,908.30 and 171,310.60

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Solution

The fourth proportional to 339,272.20, 508,908.30 and 171,310.60 is: 256,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,272.20 : 508,908.30 = 171,310.60 : x
  2. Step 2: Convert to fraction form
    339,272.20/508,908.30 = 171,310.60/x
  3. Step 3: Cross multiply
    339,272.20x = 508,908.30 × 171,310.60
  4. Step 4: Simplify right side
    339,272.20x = 87,181,386,217.98
  5. Step 5: Solve for x
    x = 87,181,386,217.98/339,272.20
  6. Step 6: Final answer
    x = 256,965.90

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Similar ratio
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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.