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Finding the Fourth Proportional to 269,431.65, 404,159.90 and 91,940.40

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Solution

The fourth proportional to 269,431.65, 404,159.90 and 91,940.40 is: 137,914.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,431.65 : 404,159.90 = 91,940.40 : x
  2. Step 2: Convert to fraction form
    269,431.65/404,159.90 = 91,940.40/x
  3. Step 3: Cross multiply
    269,431.65x = 404,159.90 × 91,940.40
  4. Step 4: Simplify right side
    269,431.65x = 37,158,622,410.26
  5. Step 5: Solve for x
    x = 37,158,622,410.26/269,431.65
  6. Step 6: Final answer
    x = 137,914.84

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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.