Home / 215,651,279.80-323,147,759.46-128,040,272.97

Finding the Fourth Proportional to 215,651,279.80, 323,147,759.46 and 128,040,272.97

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Solution

The fourth proportional to 215,651,279.80, 323,147,759.46 and 128,040,272.97 is: 191,864,974.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,651,279.80 : 323,147,759.46 = 128,040,272.97 : x
  2. Step 2: Convert to fraction form
    215,651,279.80/323,147,759.46 = 128,040,272.97/x
  3. Step 3: Cross multiply
    215,651,279.80x = 323,147,759.46 × 128,040,272.97
  4. Step 4: Simplify right side
    215,651,279.80x = 41,375,927,330,902,296
  5. Step 5: Solve for x
    x = 41,375,927,330,902,296/215,651,279.80
  6. Step 6: Final answer
    x = 191,864,974.64

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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.