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Finding the Fourth Proportional to 216,292, 324,438 and 68,548

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Solution

The fourth proportional to 216,292, 324,438 and 68,548 is: 102,822

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,292 : 324,438 = 68,548 : x
  2. Step 2: Convert to fraction form
    216,292/324,438 = 68,548/x
  3. Step 3: Cross multiply
    216,292x = 324,438 × 68,548
  4. Step 4: Simplify right side
    216,292x = 22,239,576,024
  5. Step 5: Solve for x
    x = 22,239,576,024/216,292
  6. Step 6: Final answer
    x = 102,822

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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.