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Finding the Fourth Proportional to 218,584.51, 327,368.61 and 211,007.92

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Solution

The fourth proportional to 218,584.51, 327,368.61 and 211,007.92 is: 316,021.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,584.51 : 327,368.61 = 211,007.92 : x
  2. Step 2: Convert to fraction form
    218,584.51/327,368.61 = 211,007.92/x
  3. Step 3: Cross multiply
    218,584.51x = 327,368.61 × 211,007.92
  4. Step 4: Simplify right side
    218,584.51x = 69,077,366,777.51
  5. Step 5: Solve for x
    x = 69,077,366,777.51/218,584.51
  6. Step 6: Final answer
    x = 316,021.33

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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.