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Finding the Fourth Proportional to 258,998.43, 388,395.54 and 125,839.29

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Solution

The fourth proportional to 258,998.43, 388,395.54 and 125,839.29 is: 188,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,998.43 : 388,395.54 = 125,839.29 : x
  2. Step 2: Convert to fraction form
    258,998.43/388,395.54 = 125,839.29/x
  3. Step 3: Cross multiply
    258,998.43x = 388,395.54 × 125,839.29
  4. Step 4: Simplify right side
    258,998.43x = 48,875,418,992.77
  5. Step 5: Solve for x
    x = 48,875,418,992.77/258,998.43
  6. Step 6: Final answer
    x = 188,709.33

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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.