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Finding the Fourth Proportional to 236,015.61, 353,974.20 and 86,326.39

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Solution

The fourth proportional to 236,015.61, 353,974.20 and 86,326.39 is: 129,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,015.61 : 353,974.20 = 86,326.39 : x
  2. Step 2: Convert to fraction form
    236,015.61/353,974.20 = 86,326.39/x
  3. Step 3: Cross multiply
    236,015.61x = 353,974.20 × 86,326.39
  4. Step 4: Simplify right side
    236,015.61x = 30,557,314,839.14
  5. Step 5: Solve for x
    x = 30,557,314,839.14/236,015.61
  6. Step 6: Final answer
    x = 129,471.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.