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Finding the Fourth Proportional to 259,292, 388,938 and 84,188

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Solution

The fourth proportional to 259,292, 388,938 and 84,188 is: 126,282

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,292 : 388,938 = 84,188 : x
  2. Step 2: Convert to fraction form
    259,292/388,938 = 84,188/x
  3. Step 3: Cross multiply
    259,292x = 388,938 × 84,188
  4. Step 4: Simplify right side
    259,292x = 32,743,912,344
  5. Step 5: Solve for x
    x = 32,743,912,344/259,292
  6. Step 6: Final answer
    x = 126,282

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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.