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Finding the Fourth Proportional to 218,633.72, 327,950.64 and 168,786.59

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Solution

The fourth proportional to 218,633.72, 327,950.64 and 168,786.59 is: 253,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,633.72 : 327,950.64 = 168,786.59 : x
  2. Step 2: Convert to fraction form
    218,633.72/327,950.64 = 168,786.59/x
  3. Step 3: Cross multiply
    218,633.72x = 327,950.64 × 168,786.59
  4. Step 4: Simplify right side
    218,633.72x = 55,353,668,574.16
  5. Step 5: Solve for x
    x = 55,353,668,574.16/218,633.72
  6. Step 6: Final answer
    x = 253,179.93

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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.