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Finding the Fourth Proportional to 290,753.18, 401,180.56 and 169,871.11

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Solution

The fourth proportional to 290,753.18, 401,180.56 and 169,871.11 is: 234,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,753.18 : 401,180.56 = 169,871.11 : x
  2. Step 2: Convert to fraction form
    290,753.18/401,180.56 = 169,871.11/x
  3. Step 3: Cross multiply
    290,753.18x = 401,180.56 × 169,871.11
  4. Step 4: Simplify right side
    290,753.18x = 68,148,987,037.62
  5. Step 5: Solve for x
    x = 68,148,987,037.62/290,753.18
  6. Step 6: Final answer
    x = 234,387.76

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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.