Home / 300,843.20-451,265.40-76,203.68

Finding the Fourth Proportional to 300,843.20, 451,265.40 and 76,203.68

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Solution

The fourth proportional to 300,843.20, 451,265.40 and 76,203.68 is: 114,305.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,843.20 : 451,265.40 = 76,203.68 : x
  2. Step 2: Convert to fraction form
    300,843.20/451,265.40 = 76,203.68/x
  3. Step 3: Cross multiply
    300,843.20x = 451,265.40 × 76,203.68
  4. Step 4: Simplify right side
    300,843.20x = 34,388,084,136.67
  5. Step 5: Solve for x
    x = 34,388,084,136.67/300,843.20
  6. Step 6: Final answer
    x = 114,305.67

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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.