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Finding the Fourth Proportional to 266,805.54, 400,208.31 and 126,487.62

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Solution

The fourth proportional to 266,805.54, 400,208.31 and 126,487.62 is: 189,731.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,805.54 : 400,208.31 = 126,487.62 : x
  2. Step 2: Convert to fraction form
    266,805.54/400,208.31 = 126,487.62/x
  3. Step 3: Cross multiply
    266,805.54x = 400,208.31 × 126,487.62
  4. Step 4: Simplify right side
    266,805.54x = 50,621,396,636.12
  5. Step 5: Solve for x
    x = 50,621,396,636.12/266,805.54
  6. Step 6: Final answer
    x = 189,731.43

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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.