Home / 290,199.89-400,456.31-161,131.73

Finding the Fourth Proportional to 290,199.89, 400,456.31 and 161,131.73

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Solution

The fourth proportional to 290,199.89, 400,456.31 and 161,131.73 is: 222,350.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,199.89 : 400,456.31 = 161,131.73 : x
  2. Step 2: Convert to fraction form
    290,199.89/400,456.31 = 161,131.73/x
  3. Step 3: Cross multiply
    290,199.89x = 400,456.31 × 161,131.73
  4. Step 4: Simplify right side
    290,199.89x = 64,526,215,211.78
  5. Step 5: Solve for x
    x = 64,526,215,211.78/290,199.89
  6. Step 6: Final answer
    x = 222,350.93

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1.5x scale

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.