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Finding the Fourth Proportional to 290,753.48, 401,181 and 169,871.42

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Solution

The fourth proportional to 290,753.48, 401,181 and 169,871.42 is: 234,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,753.48 : 401,181 = 169,871.42 : x
  2. Step 2: Convert to fraction form
    290,753.48/401,181 = 169,871.42/x
  3. Step 3: Cross multiply
    290,753.48x = 401,181 × 169,871.42
  4. Step 4: Simplify right side
    290,753.48x = 68,149,186,147.02
  5. Step 5: Solve for x
    x = 68,149,186,147.02/290,753.48
  6. Step 6: Final answer
    x = 234,388.20

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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.