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Finding the Fourth Proportional to 825,959.52, 1,238,791.38 and 218,751.90

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Solution

The fourth proportional to 825,959.52, 1,238,791.38 and 218,751.90 is: 328,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,959.52 : 1,238,791.38 = 218,751.90 : x
  2. Step 2: Convert to fraction form
    825,959.52/1,238,791.38 = 218,751.90/x
  3. Step 3: Cross multiply
    825,959.52x = 1,238,791.38 × 218,751.90
  4. Step 4: Simplify right side
    825,959.52x = 270,987,968,078.62
  5. Step 5: Solve for x
    x = 270,987,968,078.62/825,959.52
  6. Step 6: Final answer
    x = 328,088.68

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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.