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Finding the Fourth Proportional to 485,857.77, 670,481.96 and 270,997.66

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Solution

The fourth proportional to 485,857.77, 670,481.96 and 270,997.66 is: 373,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,857.77 : 670,481.96 = 270,997.66 : x
  2. Step 2: Convert to fraction form
    485,857.77/670,481.96 = 270,997.66/x
  3. Step 3: Cross multiply
    485,857.77x = 670,481.96 × 270,997.66
  4. Step 4: Simplify right side
    485,857.77x = 181,699,042,232.21
  5. Step 5: Solve for x
    x = 181,699,042,232.21/485,857.77
  6. Step 6: Final answer
    x = 373,975.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.