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Finding the Fourth Proportional to 419,268.32, 628,377.56 and 330,169.92

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Solution

The fourth proportional to 419,268.32, 628,377.56 and 330,169.92 is: 494,841.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,268.32 : 628,377.56 = 330,169.92 : x
  2. Step 2: Convert to fraction form
    419,268.32/628,377.56 = 330,169.92/x
  3. Step 3: Cross multiply
    419,268.32x = 628,377.56 × 330,169.92
  4. Step 4: Simplify right side
    419,268.32x = 207,471,368,715.00
  5. Step 5: Solve for x
    x = 207,471,368,715.00/419,268.32
  6. Step 6: Final answer
    x = 494,841.51

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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.