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Finding the Fourth Proportional to 300,988.53, 451,478.21 and 73,286.28

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Solution

The fourth proportional to 300,988.53, 451,478.21 and 73,286.28 is: 109,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,988.53 : 451,478.21 = 73,286.28 : x
  2. Step 2: Convert to fraction form
    300,988.53/451,478.21 = 73,286.28/x
  3. Step 3: Cross multiply
    300,988.53x = 451,478.21 × 73,286.28
  4. Step 4: Simplify right side
    300,988.53x = 33,087,158,145.53
  5. Step 5: Solve for x
    x = 33,087,158,145.53/300,988.53
  6. Step 6: Final answer
    x = 109,928.30

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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.