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Finding the Fourth Proportional to 217,059.15, 325,601.04 and 67,320.72

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Solution

The fourth proportional to 217,059.15, 325,601.04 and 67,320.72 is: 100,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,059.15 : 325,601.04 = 67,320.72 : x
  2. Step 2: Convert to fraction form
    217,059.15/325,601.04 = 67,320.72/x
  3. Step 3: Cross multiply
    217,059.15x = 325,601.04 × 67,320.72
  4. Step 4: Simplify right side
    217,059.15x = 21,919,696,445.55
  5. Step 5: Solve for x
    x = 21,919,696,445.55/217,059.15
  6. Step 6: Final answer
    x = 100,984.90

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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.