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Finding the Fourth Proportional to 253,381.43, 349,610.85 and 151,391.57

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Solution

The fourth proportional to 253,381.43, 349,610.85 and 151,391.57 is: 208,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,381.43 : 349,610.85 = 151,391.57 : x
  2. Step 2: Convert to fraction form
    253,381.43/349,610.85 = 151,391.57/x
  3. Step 3: Cross multiply
    253,381.43x = 349,610.85 × 151,391.57
  4. Step 4: Simplify right side
    253,381.43x = 52,928,135,470.53
  5. Step 5: Solve for x
    x = 52,928,135,470.53/253,381.43
  6. Step 6: Final answer
    x = 208,887.19

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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.