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Finding the Fourth Proportional to 300,650.21, 450,996.36 and 120,735.61

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Solution

The fourth proportional to 300,650.21, 450,996.36 and 120,735.61 is: 181,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,650.21 : 450,996.36 = 120,735.61 : x
  2. Step 2: Convert to fraction form
    300,650.21/450,996.36 = 120,735.61/x
  3. Step 3: Cross multiply
    300,650.21x = 450,996.36 × 120,735.61
  4. Step 4: Simplify right side
    300,650.21x = 54,451,319,052.13
  5. Step 5: Solve for x
    x = 54,451,319,052.13/300,650.21
  6. Step 6: Final answer
    x = 181,111.86

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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.