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Finding the Fourth Proportional to 216,704.90, 324,976.51 and 74,509.94

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Solution

The fourth proportional to 216,704.90, 324,976.51 and 74,509.94 is: 111,737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,704.90 : 324,976.51 = 74,509.94 : x
  2. Step 2: Convert to fraction form
    216,704.90/324,976.51 = 74,509.94/x
  3. Step 3: Cross multiply
    216,704.90x = 324,976.51 × 74,509.94
  4. Step 4: Simplify right side
    216,704.90x = 24,213,978,636.63
  5. Step 5: Solve for x
    x = 24,213,978,636.63/216,704.90
  6. Step 6: Final answer
    x = 111,737.11

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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.