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Finding the Fourth Proportional to 236,874.90, 326,891.62 and 129,449.46

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Solution

The fourth proportional to 236,874.90, 326,891.62 and 129,449.46 is: 178,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,874.90 : 326,891.62 = 129,449.46 : x
  2. Step 2: Convert to fraction form
    236,874.90/326,891.62 = 129,449.46/x
  3. Step 3: Cross multiply
    236,874.90x = 326,891.62 × 129,449.46
  4. Step 4: Simplify right side
    236,874.90x = 42,315,943,687.53
  5. Step 5: Solve for x
    x = 42,315,943,687.53/236,874.90
  6. Step 6: Final answer
    x = 178,642.58

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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.