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Finding the Fourth Proportional to 269,785.98, 404,678.70 and 80,245.56

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Solution

The fourth proportional to 269,785.98, 404,678.70 and 80,245.56 is: 120,368.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,785.98 : 404,678.70 = 80,245.56 : x
  2. Step 2: Convert to fraction form
    269,785.98/404,678.70 = 80,245.56/x
  3. Step 3: Cross multiply
    269,785.98x = 404,678.70 × 80,245.56
  4. Step 4: Simplify right side
    269,785.98x = 32,473,668,901.57
  5. Step 5: Solve for x
    x = 32,473,668,901.57/269,785.98
  6. Step 6: Final answer
    x = 120,368.26

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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.