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Finding the Fourth Proportional to 485,399.82, 669,854.87 and 270,553.53

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Solution

The fourth proportional to 485,399.82, 669,854.87 and 270,553.53 is: 373,365.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,399.82 : 669,854.87 = 270,553.53 : x
  2. Step 2: Convert to fraction form
    485,399.82/669,854.87 = 270,553.53/x
  3. Step 3: Cross multiply
    485,399.82x = 669,854.87 × 270,553.53
  4. Step 4: Simplify right side
    485,399.82x = 181,231,599,666.19
  5. Step 5: Solve for x
    x = 181,231,599,666.19/485,399.82
  6. Step 6: Final answer
    x = 373,365.61

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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.