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Finding the Fourth Proportional to 217,137.78, 325,737.59 and 67,391.01

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Solution

The fourth proportional to 217,137.78, 325,737.59 and 67,391.01 is: 101,096.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,137.78 : 325,737.59 = 67,391.01 : x
  2. Step 2: Convert to fraction form
    217,137.78/325,737.59 = 67,391.01/x
  3. Step 3: Cross multiply
    217,137.78x = 325,737.59 × 67,391.01
  4. Step 4: Simplify right side
    217,137.78x = 21,951,784,848.11
  5. Step 5: Solve for x
    x = 21,951,784,848.11/217,137.78
  6. Step 6: Final answer
    x = 101,096.11

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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.