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Finding the Fourth Proportional to 217,716.60, 326,587.06 and 67,977.56

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Solution

The fourth proportional to 217,716.60, 326,587.06 and 67,977.56 is: 101,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,716.60 : 326,587.06 = 67,977.56 : x
  2. Step 2: Convert to fraction form
    217,716.60/326,587.06 = 67,977.56/x
  3. Step 3: Cross multiply
    217,716.60x = 326,587.06 × 67,977.56
  4. Step 4: Simplify right side
    217,716.60x = 22,200,591,466.37
  5. Step 5: Solve for x
    x = 22,200,591,466.37/217,716.60
  6. Step 6: Final answer
    x = 101,970.14

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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.