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Finding the Fourth Proportional to 218,368.69, 327,386.58 and 68,522.56

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Solution

The fourth proportional to 218,368.69, 327,386.58 and 68,522.56 is: 102,731.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,368.69 : 327,386.58 = 68,522.56 : x
  2. Step 2: Convert to fraction form
    218,368.69/327,386.58 = 68,522.56/x
  3. Step 3: Cross multiply
    218,368.69x = 327,386.58 × 68,522.56
  4. Step 4: Simplify right side
    218,368.69x = 22,433,366,571.24
  5. Step 5: Solve for x
    x = 22,433,366,571.24/218,368.69
  6. Step 6: Final answer
    x = 102,731.61

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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.