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Finding the Fourth Proportional to 300,809.64, 451,215.47 and 76,169.97

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Solution

The fourth proportional to 300,809.64, 451,215.47 and 76,169.97 is: 114,255.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,809.64 : 451,215.47 = 76,169.97 : x
  2. Step 2: Convert to fraction form
    300,809.64/451,215.47 = 76,169.97/x
  3. Step 3: Cross multiply
    300,809.64x = 451,215.47 × 76,169.97
  4. Step 4: Simplify right side
    300,809.64x = 34,369,068,813.44
  5. Step 5: Solve for x
    x = 34,369,068,813.44/300,809.64
  6. Step 6: Final answer
    x = 114,255.21

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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.