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Finding the Fourth Proportional to 231,626.27, 319,629.47 and 129,634.56

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Solution

The fourth proportional to 231,626.27, 319,629.47 and 129,634.56 is: 178,887.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,626.27 : 319,629.47 = 129,634.56 : x
  2. Step 2: Convert to fraction form
    231,626.27/319,629.47 = 129,634.56/x
  3. Step 3: Cross multiply
    231,626.27x = 319,629.47 × 129,634.56
  4. Step 4: Simplify right side
    231,626.27x = 41,435,025,058.31
  5. Step 5: Solve for x
    x = 41,435,025,058.31/231,626.27
  6. Step 6: Final answer
    x = 178,887.41

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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.