Home / 486,711.40-730,067.10-131,780.20

Finding the Fourth Proportional to 486,711.40, 730,067.10 and 131,780.20

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Solution

The fourth proportional to 486,711.40, 730,067.10 and 131,780.20 is: 197,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,711.40 : 730,067.10 = 131,780.20 : x
  2. Step 2: Convert to fraction form
    486,711.40/730,067.10 = 131,780.20/x
  3. Step 3: Cross multiply
    486,711.40x = 730,067.10 × 131,780.20
  4. Step 4: Simplify right side
    486,711.40x = 96,208,388,451.42
  5. Step 5: Solve for x
    x = 96,208,388,451.42/486,711.40
  6. Step 6: Final answer
    x = 197,670.30

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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.