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Finding the Fourth Proportional to 218,609.81, 327,914.78 and 168,762.68

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Solution

The fourth proportional to 218,609.81, 327,914.78 and 168,762.68 is: 253,144.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,609.81 : 327,914.78 = 168,762.68 : x
  2. Step 2: Convert to fraction form
    218,609.81/327,914.78 = 168,762.68/x
  3. Step 3: Cross multiply
    218,609.81x = 327,914.78 × 168,762.68
  4. Step 4: Simplify right side
    218,609.81x = 55,339,776,779.99
  5. Step 5: Solve for x
    x = 55,339,776,779.99/218,609.81
  6. Step 6: Final answer
    x = 253,144.07

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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.