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Finding the Fourth Proportional to 279,565.50, 419,351.49 and 69,205.26

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Solution

The fourth proportional to 279,565.50, 419,351.49 and 69,205.26 is: 103,808.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,565.50 : 419,351.49 = 69,205.26 : x
  2. Step 2: Convert to fraction form
    279,565.50/419,351.49 = 69,205.26/x
  3. Step 3: Cross multiply
    279,565.50x = 419,351.49 × 69,205.26
  4. Step 4: Simplify right side
    279,565.50x = 29,021,328,896.84
  5. Step 5: Solve for x
    x = 29,021,328,896.84/279,565.50
  6. Step 6: Final answer
    x = 103,808.69

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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.