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Finding the Fourth Proportional to 217,682.84, 326,512.73 and 67,905.97

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Solution

The fourth proportional to 217,682.84, 326,512.73 and 67,905.97 is: 101,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,682.84 : 326,512.73 = 67,905.97 : x
  2. Step 2: Convert to fraction form
    217,682.84/326,512.73 = 67,905.97/x
  3. Step 3: Cross multiply
    217,682.84x = 326,512.73 × 67,905.97
  4. Step 4: Simplify right side
    217,682.84x = 22,172,163,001.48
  5. Step 5: Solve for x
    x = 22,172,163,001.48/217,682.84
  6. Step 6: Final answer
    x = 101,855.35

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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.