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Finding the Fourth Proportional to 216,543.38, 324,845.03 and 66,795.44

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Solution

The fourth proportional to 216,543.38, 324,845.03 and 66,795.44 is: 100,202.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,543.38 : 324,845.03 = 66,795.44 : x
  2. Step 2: Convert to fraction form
    216,543.38/324,845.03 = 66,795.44/x
  3. Step 3: Cross multiply
    216,543.38x = 324,845.03 × 66,795.44
  4. Step 4: Simplify right side
    216,543.38x = 21,698,165,253.43
  5. Step 5: Solve for x
    x = 21,698,165,253.43/216,543.38
  6. Step 6: Final answer
    x = 100,202.40

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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.