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Finding the Fourth Proportional to 290,553.48, 400,974.12 and 161,494.56

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Solution

The fourth proportional to 290,553.48, 400,974.12 and 161,494.56 is: 222,868.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,553.48 : 400,974.12 = 161,494.56 : x
  2. Step 2: Convert to fraction form
    290,553.48/400,974.12 = 161,494.56/x
  3. Step 3: Cross multiply
    290,553.48x = 400,974.12 × 161,494.56
  4. Step 4: Simplify right side
    290,553.48x = 64,755,139,080.79
  5. Step 5: Solve for x
    x = 64,755,139,080.79/290,553.48
  6. Step 6: Final answer
    x = 222,868.23

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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.