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Finding the Fourth Proportional to 279,914.93, 419,872.70 and 69,552.87

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Solution

The fourth proportional to 279,914.93, 419,872.70 and 69,552.87 is: 104,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,914.93 : 419,872.70 = 69,552.87 : x
  2. Step 2: Convert to fraction form
    279,914.93/419,872.70 = 69,552.87/x
  3. Step 3: Cross multiply
    279,914.93x = 419,872.70 × 69,552.87
  4. Step 4: Simplify right side
    279,914.93x = 29,203,350,183.03
  5. Step 5: Solve for x
    x = 29,203,350,183.03/279,914.93
  6. Step 6: Final answer
    x = 104,329.38

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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.