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Finding the Fourth Proportional to 216,149.76, 324,268.38 and 75,919.32

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Solution

The fourth proportional to 216,149.76, 324,268.38 and 75,919.32 is: 113,894.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,149.76 : 324,268.38 = 75,919.32 : x
  2. Step 2: Convert to fraction form
    216,149.76/324,268.38 = 75,919.32/x
  3. Step 3: Cross multiply
    216,149.76x = 324,268.38 × 75,919.32
  4. Step 4: Simplify right side
    216,149.76x = 24,618,234,907.10
  5. Step 5: Solve for x
    x = 24,618,234,907.10/216,149.76
  6. Step 6: Final answer
    x = 113,894.34

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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.