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Finding the Fourth Proportional to 404,863.11, 607,664.97 and 205,321.23

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Solution

The fourth proportional to 404,863.11, 607,664.97 and 205,321.23 is: 308,169.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,863.11 : 607,664.97 = 205,321.23 : x
  2. Step 2: Convert to fraction form
    404,863.11/607,664.97 = 205,321.23/x
  3. Step 3: Cross multiply
    404,863.11x = 607,664.97 × 205,321.23
  4. Step 4: Simplify right side
    404,863.11x = 124,766,519,068.31
  5. Step 5: Solve for x
    x = 124,766,519,068.31/404,863.11
  6. Step 6: Final answer
    x = 308,169.64

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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.