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Finding the Fourth Proportional to 216,505.30, 324,795.22 and 74,343.82

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Solution

The fourth proportional to 216,505.30, 324,795.22 and 74,343.82 is: 111,528.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,505.30 : 324,795.22 = 74,343.82 : x
  2. Step 2: Convert to fraction form
    216,505.30/324,795.22 = 74,343.82/x
  3. Step 3: Cross multiply
    216,505.30x = 324,795.22 × 74,343.82
  4. Step 4: Simplify right side
    216,505.30x = 24,146,517,372.54
  5. Step 5: Solve for x
    x = 24,146,517,372.54/216,505.30
  6. Step 6: Final answer
    x = 111,528.53

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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.