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Finding the Fourth Proportional to 259,410.39, 386,536.66 and 231,113

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Solution

The fourth proportional to 259,410.39, 386,536.66 and 231,113 is: 344,371.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,410.39 : 386,536.66 = 231,113 : x
  2. Step 2: Convert to fraction form
    259,410.39/386,536.66 = 231,113/x
  3. Step 3: Cross multiply
    259,410.39x = 386,536.66 × 231,113
  4. Step 4: Simplify right side
    259,410.39x = 89,333,647,102.58
  5. Step 5: Solve for x
    x = 89,333,647,102.58/259,410.39
  6. Step 6: Final answer
    x = 344,371.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.