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Finding the Fourth Proportional to 269,351.20, 404,026.80 and 91,815.40

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Solution

The fourth proportional to 269,351.20, 404,026.80 and 91,815.40 is: 137,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,351.20 : 404,026.80 = 91,815.40 : x
  2. Step 2: Convert to fraction form
    269,351.20/404,026.80 = 91,815.40/x
  3. Step 3: Cross multiply
    269,351.20x = 404,026.80 × 91,815.40
  4. Step 4: Simplify right side
    269,351.20x = 37,095,882,252.72
  5. Step 5: Solve for x
    x = 37,095,882,252.72/269,351.20
  6. Step 6: Final answer
    x = 137,723.10

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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.