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Finding the Fourth Proportional to 290,608.39, 401,044.32 and 159,791.57

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Solution

The fourth proportional to 290,608.39, 401,044.32 and 159,791.57 is: 220,514.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,608.39 : 401,044.32 = 159,791.57 : x
  2. Step 2: Convert to fraction form
    290,608.39/401,044.32 = 159,791.57/x
  3. Step 3: Cross multiply
    290,608.39x = 401,044.32 × 159,791.57
  4. Step 4: Simplify right side
    290,608.39x = 64,083,498,728.20
  5. Step 5: Solve for x
    x = 64,083,498,728.20/290,608.39
  6. Step 6: Final answer
    x = 220,514.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.