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Finding the Fourth Proportional to 269,415.20, 404,084.40 and 91,930.40

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Solution

The fourth proportional to 269,415.20, 404,084.40 and 91,930.40 is: 137,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,415.20 : 404,084.40 = 91,930.40 : x
  2. Step 2: Convert to fraction form
    269,415.20/404,084.40 = 91,930.40/x
  3. Step 3: Cross multiply
    269,415.20x = 404,084.40 × 91,930.40
  4. Step 4: Simplify right side
    269,415.20x = 37,147,640,525.76
  5. Step 5: Solve for x
    x = 37,147,640,525.76/269,415.20
  6. Step 6: Final answer
    x = 137,882.50

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1.5x scale

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.