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Finding the Fourth Proportional to 300,687.75, 451,058.27 and 79,071.75

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Solution

The fourth proportional to 300,687.75, 451,058.27 and 79,071.75 is: 118,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,687.75 : 451,058.27 = 79,071.75 : x
  2. Step 2: Convert to fraction form
    300,687.75/451,058.27 = 79,071.75/x
  3. Step 3: Cross multiply
    300,687.75x = 451,058.27 × 79,071.75
  4. Step 4: Simplify right side
    300,687.75x = 35,665,966,760.87
  5. Step 5: Solve for x
    x = 35,665,966,760.87/300,687.75
  6. Step 6: Final answer
    x = 118,614.63

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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.