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Finding the Fourth Proportional to 300,687.76, 451,058.28 and 79,071.76

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Solution

The fourth proportional to 300,687.76, 451,058.28 and 79,071.76 is: 118,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,687.76 : 451,058.28 = 79,071.76 : x
  2. Step 2: Convert to fraction form
    300,687.76/451,058.28 = 79,071.76/x
  3. Step 3: Cross multiply
    300,687.76x = 451,058.28 × 79,071.76
  4. Step 4: Simplify right side
    300,687.76x = 35,665,972,062.17
  5. Step 5: Solve for x
    x = 35,665,972,062.17/300,687.76
  6. Step 6: Final answer
    x = 118,614.65

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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.