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Finding the Fourth Proportional to 279,961.26, 419,938.25 and 69,601.02

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Solution

The fourth proportional to 279,961.26, 419,938.25 and 69,601.02 is: 104,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,961.26 : 419,938.25 = 69,601.02 : x
  2. Step 2: Convert to fraction form
    279,961.26/419,938.25 = 69,601.02/x
  3. Step 3: Cross multiply
    279,961.26x = 419,938.25 × 69,601.02
  4. Step 4: Simplify right side
    279,961.26x = 29,228,130,189.01
  5. Step 5: Solve for x
    x = 29,228,130,189.01/279,961.26
  6. Step 6: Final answer
    x = 104,400.62

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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.