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Finding the Fourth Proportional to 279,015.38, 416,628.09 and 271,448.59

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Solution

The fourth proportional to 279,015.38, 416,628.09 and 271,448.59 is: 405,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,015.38 : 416,628.09 = 271,448.59 : x
  2. Step 2: Convert to fraction form
    279,015.38/416,628.09 = 271,448.59/x
  3. Step 3: Cross multiply
    279,015.38x = 416,628.09 × 271,448.59
  4. Step 4: Simplify right side
    279,015.38x = 113,093,107,584.89
  5. Step 5: Solve for x
    x = 113,093,107,584.89/279,015.38
  6. Step 6: Final answer
    x = 405,329.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.