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Finding the Fourth Proportional to 259,172.75, 388,732.84 and 69,608.50

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Solution

The fourth proportional to 259,172.75, 388,732.84 and 69,608.50 is: 104,405.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,172.75 : 388,732.84 = 69,608.50 : x
  2. Step 2: Convert to fraction form
    259,172.75/388,732.84 = 69,608.50/x
  3. Step 3: Cross multiply
    259,172.75x = 388,732.84 × 69,608.50
  4. Step 4: Simplify right side
    259,172.75x = 27,059,108,747.29
  5. Step 5: Solve for x
    x = 27,059,108,747.29/259,172.75
  6. Step 6: Final answer
    x = 104,405.68

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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.