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Finding the Fourth Proportional to 510,147.90, 765,221.85 and 131,067.90

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Solution

The fourth proportional to 510,147.90, 765,221.85 and 131,067.90 is: 196,601.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,147.90 : 765,221.85 = 131,067.90 : x
  2. Step 2: Convert to fraction form
    510,147.90/765,221.85 = 131,067.90/x
  3. Step 3: Cross multiply
    510,147.90x = 765,221.85 × 131,067.90
  4. Step 4: Simplify right side
    510,147.90x = 100,296,020,913.62
  5. Step 5: Solve for x
    x = 100,296,020,913.62/510,147.90
  6. Step 6: Final answer
    x = 196,601.85

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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.