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Finding the Fourth Proportional to 300,972.51, 451,140.48 and 111,311.01

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Solution

The fourth proportional to 300,972.51, 451,140.48 and 111,311.01 is: 166,848.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,972.51 : 451,140.48 = 111,311.01 : x
  2. Step 2: Convert to fraction form
    300,972.51/451,140.48 = 111,311.01/x
  3. Step 3: Cross multiply
    300,972.51x = 451,140.48 × 111,311.01
  4. Step 4: Simplify right side
    300,972.51x = 50,216,902,480.68
  5. Step 5: Solve for x
    x = 50,216,902,480.68/300,972.51
  6. Step 6: Final answer
    x = 166,848.80

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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.