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Finding the Fourth Proportional to 269,195.43, 371,489.72 and 156,083.79

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Solution

The fourth proportional to 269,195.43, 371,489.72 and 156,083.79 is: 215,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,195.43 : 371,489.72 = 156,083.79 : x
  2. Step 2: Convert to fraction form
    269,195.43/371,489.72 = 156,083.79/x
  3. Step 3: Cross multiply
    269,195.43x = 371,489.72 × 156,083.79
  4. Step 4: Simplify right side
    269,195.43x = 57,983,522,663.22
  5. Step 5: Solve for x
    x = 57,983,522,663.22/269,195.43
  6. Step 6: Final answer
    x = 215,395.64

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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.