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Finding the Fourth Proportional to 218,638.22, 327,957.39 and 168,791.08

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Solution

The fourth proportional to 218,638.22, 327,957.39 and 168,791.08 is: 253,186.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,638.22 : 327,957.39 = 168,791.08 : x
  2. Step 2: Convert to fraction form
    218,638.22/327,957.39 = 168,791.08/x
  3. Step 3: Cross multiply
    218,638.22x = 327,957.39 × 168,791.08
  4. Step 4: Simplify right side
    218,638.22x = 55,356,282,052.08
  5. Step 5: Solve for x
    x = 55,356,282,052.08/218,638.22
  6. Step 6: Final answer
    x = 253,186.67

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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.