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Finding the Fourth Proportional to 258,996.43, 388,392.54 and 125,837.29

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Solution

The fourth proportional to 258,996.43, 388,392.54 and 125,837.29 is: 188,706.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,996.43 : 388,392.54 = 125,837.29 : x
  2. Step 2: Convert to fraction form
    258,996.43/388,392.54 = 125,837.29/x
  3. Step 3: Cross multiply
    258,996.43x = 388,392.54 × 125,837.29
  4. Step 4: Simplify right side
    258,996.43x = 48,874,264,689.82
  5. Step 5: Solve for x
    x = 48,874,264,689.82/258,996.43
  6. Step 6: Final answer
    x = 188,706.33

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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.