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Finding the Fourth Proportional to 300,704.80, 451,057.20 and 134,492.80

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Solution

The fourth proportional to 300,704.80, 451,057.20 and 134,492.80 is: 201,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,704.80 : 451,057.20 = 134,492.80 : x
  2. Step 2: Convert to fraction form
    300,704.80/451,057.20 = 134,492.80/x
  3. Step 3: Cross multiply
    300,704.80x = 451,057.20 × 134,492.80
  4. Step 4: Simplify right side
    300,704.80x = 60,663,945,788.16
  5. Step 5: Solve for x
    x = 60,663,945,788.16/300,704.80
  6. Step 6: Final answer
    x = 201,739.20

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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.