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Finding the Fourth Proportional to 218,609.91, 327,914.93 and 168,762.78

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Solution

The fourth proportional to 218,609.91, 327,914.93 and 168,762.78 is: 253,144.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,609.91 : 327,914.93 = 168,762.78 : x
  2. Step 2: Convert to fraction form
    218,609.91/327,914.93 = 168,762.78/x
  3. Step 3: Cross multiply
    218,609.91x = 327,914.93 × 168,762.78
  4. Step 4: Simplify right side
    218,609.91x = 55,339,834,346.49
  5. Step 5: Solve for x
    x = 55,339,834,346.49/218,609.91
  6. Step 6: Final answer
    x = 253,144.22

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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.