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Finding the Fourth Proportional to 269,561.34, 371,874.42 and 156,318.48

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Solution

The fourth proportional to 269,561.34, 371,874.42 and 156,318.48 is: 215,649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,561.34 : 371,874.42 = 156,318.48 : x
  2. Step 2: Convert to fraction form
    269,561.34/371,874.42 = 156,318.48/x
  3. Step 3: Cross multiply
    269,561.34x = 371,874.42 × 156,318.48
  4. Step 4: Simplify right side
    269,561.34x = 58,130,844,085.28
  5. Step 5: Solve for x
    x = 58,130,844,085.28/269,561.34
  6. Step 6: Final answer
    x = 215,649.78

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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.