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Finding the Fourth Proportional to 290,179.56, 400,471.70 and 161,126.04

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Solution

The fourth proportional to 290,179.56, 400,471.70 and 161,126.04 is: 222,367.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,179.56 : 400,471.70 = 161,126.04 : x
  2. Step 2: Convert to fraction form
    290,179.56/400,471.70 = 161,126.04/x
  3. Step 3: Cross multiply
    290,179.56x = 400,471.70 × 161,126.04
  4. Step 4: Simplify right side
    290,179.56x = 64,526,419,849.21
  5. Step 5: Solve for x
    x = 64,526,419,849.21/290,179.56
  6. Step 6: Final answer
    x = 222,367.21

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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.