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Finding the Fourth Proportional to 303,998.28, 455,751.45 and 126,638.52

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Solution

The fourth proportional to 303,998.28, 455,751.45 and 126,638.52 is: 189,855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,998.28 : 455,751.45 = 126,638.52 : x
  2. Step 2: Convert to fraction form
    303,998.28/455,751.45 = 126,638.52/x
  3. Step 3: Cross multiply
    303,998.28x = 455,751.45 × 126,638.52
  4. Step 4: Simplify right side
    303,998.28x = 57,715,689,115.85
  5. Step 5: Solve for x
    x = 57,715,689,115.85/303,998.28
  6. Step 6: Final answer
    x = 189,855.31

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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.