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Finding the Fourth Proportional to 290,579.68, 400,997.22 and 161,514.77

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Solution

The fourth proportional to 290,579.68, 400,997.22 and 161,514.77 is: 222,888.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,579.68 : 400,997.22 = 161,514.77 : x
  2. Step 2: Convert to fraction form
    290,579.68/400,997.22 = 161,514.77/x
  3. Step 3: Cross multiply
    290,579.68x = 400,997.22 × 161,514.77
  4. Step 4: Simplify right side
    290,579.68x = 64,766,973,758.94
  5. Step 5: Solve for x
    x = 64,766,973,758.94/290,579.68
  6. Step 6: Final answer
    x = 222,888.86

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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.