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Finding the Fourth Proportional to 216,620.28, 324,936 and 102,741.48

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Solution

The fourth proportional to 216,620.28, 324,936 and 102,741.48 is: 154,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,620.28 : 324,936 = 102,741.48 : x
  2. Step 2: Convert to fraction form
    216,620.28/324,936 = 102,741.48/x
  3. Step 3: Cross multiply
    216,620.28x = 324,936 × 102,741.48
  4. Step 4: Simplify right side
    216,620.28x = 33,384,405,545.28
  5. Step 5: Solve for x
    x = 33,384,405,545.28/216,620.28
  6. Step 6: Final answer
    x = 154,114.87

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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.