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Finding the Fourth Proportional to 269,022, 371,276.28 and 149,790

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Solution

The fourth proportional to 269,022, 371,276.28 and 149,790 is: 206,724.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,022 : 371,276.28 = 149,790 : x
  2. Step 2: Convert to fraction form
    269,022/371,276.28 = 149,790/x
  3. Step 3: Cross multiply
    269,022x = 371,276.28 × 149,790
  4. Step 4: Simplify right side
    269,022x = 55,613,473,981.20
  5. Step 5: Solve for x
    x = 55,613,473,981.20/269,022
  6. Step 6: Final answer
    x = 206,724.63

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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.