Home / 211,979,481.20-317,969,221.80-114,981,657.20

Finding the Fourth Proportional to 211,979,481.20, 317,969,221.80 and 114,981,657.20

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Solution

The fourth proportional to 211,979,481.20, 317,969,221.80 and 114,981,657.20 is: 172,472,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,979,481.20 : 317,969,221.80 = 114,981,657.20 : x
  2. Step 2: Convert to fraction form
    211,979,481.20/317,969,221.80 = 114,981,657.20/x
  3. Step 3: Cross multiply
    211,979,481.20x = 317,969,221.80 × 114,981,657.20
  4. Step 4: Simplify right side
    211,979,481.20x = 36,560,628,061,158,368
  5. Step 5: Solve for x
    x = 36,560,628,061,158,368/211,979,481.20
  6. Step 6: Final answer
    x = 172,472,485.80

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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.