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Finding the Fourth Proportional to 258,936.52, 388,376.52 and 69,415.48

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Solution

The fourth proportional to 258,936.52, 388,376.52 and 69,415.48 is: 104,115.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,936.52 : 388,376.52 = 69,415.48 : x
  2. Step 2: Convert to fraction form
    258,936.52/388,376.52 = 69,415.48/x
  3. Step 3: Cross multiply
    258,936.52x = 388,376.52 × 69,415.48
  4. Step 4: Simplify right side
    258,936.52x = 26,959,342,556.53
  5. Step 5: Solve for x
    x = 26,959,342,556.53/258,936.52
  6. Step 6: Final answer
    x = 104,115.64

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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.