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Finding the Fourth Proportional to 300,885.48, 451,358.19 and 111,396.51

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Solution

The fourth proportional to 300,885.48, 451,358.19 and 111,396.51 is: 167,105.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,885.48 : 451,358.19 = 111,396.51 : x
  2. Step 2: Convert to fraction form
    300,885.48/451,358.19 = 111,396.51/x
  3. Step 3: Cross multiply
    300,885.48x = 451,358.19 × 111,396.51
  4. Step 4: Simplify right side
    300,885.48x = 50,279,727,125.92
  5. Step 5: Solve for x
    x = 50,279,727,125.92/300,885.48
  6. Step 6: Final answer
    x = 167,105.86

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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.