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Finding the Fourth Proportional to 269,457.91, 404,075.66 and 91,979.21

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Solution

The fourth proportional to 269,457.91, 404,075.66 and 91,979.21 is: 137,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,457.91 : 404,075.66 = 91,979.21 : x
  2. Step 2: Convert to fraction form
    269,457.91/404,075.66 = 91,979.21/x
  3. Step 3: Cross multiply
    269,457.91x = 404,075.66 × 91,979.21
  4. Step 4: Simplify right side
    269,457.91x = 37,166,560,537.32
  5. Step 5: Solve for x
    x = 37,166,560,537.32/269,457.91
  6. Step 6: Final answer
    x = 137,930.86

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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.