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Finding the Fourth Proportional to 218,131.50, 327,201.36 and 68,368.50

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Solution

The fourth proportional to 218,131.50, 327,201.36 and 68,368.50 is: 102,554.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,131.50 : 327,201.36 = 68,368.50 : x
  2. Step 2: Convert to fraction form
    218,131.50/327,201.36 = 68,368.50/x
  3. Step 3: Cross multiply
    218,131.50x = 327,201.36 × 68,368.50
  4. Step 4: Simplify right side
    218,131.50x = 22,370,266,181.16
  5. Step 5: Solve for x
    x = 22,370,266,181.16/218,131.50
  6. Step 6: Final answer
    x = 102,554.04

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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.