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Finding the Fourth Proportional to 218,321.34, 326,874.60 and 111,474.51

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Solution

The fourth proportional to 218,321.34, 326,874.60 and 111,474.51 is: 166,901.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,321.34 : 326,874.60 = 111,474.51 : x
  2. Step 2: Convert to fraction form
    218,321.34/326,874.60 = 111,474.51/x
  3. Step 3: Cross multiply
    218,321.34x = 326,874.60 × 111,474.51
  4. Step 4: Simplify right side
    218,321.34x = 36,438,185,866.45
  5. Step 5: Solve for x
    x = 36,438,185,866.45/218,321.34
  6. Step 6: Final answer
    x = 166,901.62

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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.