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Finding the Fourth Proportional to 290,446.57, 400,796.54 and 163,119.43

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Solution

The fourth proportional to 290,446.57, 400,796.54 and 163,119.43 is: 225,093.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,446.57 : 400,796.54 = 163,119.43 : x
  2. Step 2: Convert to fraction form
    290,446.57/400,796.54 = 163,119.43/x
  3. Step 3: Cross multiply
    290,446.57x = 400,796.54 × 163,119.43
  4. Step 4: Simplify right side
    290,446.57x = 65,377,702,335.18
  5. Step 5: Solve for x
    x = 65,377,702,335.18/290,446.57
  6. Step 6: Final answer
    x = 225,093.73

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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.