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Finding the Fourth Proportional to 485,083.31, 727,765.41 and 200,721.37

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Solution

The fourth proportional to 485,083.31, 727,765.41 and 200,721.37 is: 301,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,083.31 : 727,765.41 = 200,721.37 : x
  2. Step 2: Convert to fraction form
    485,083.31/727,765.41 = 200,721.37/x
  3. Step 3: Cross multiply
    485,083.31x = 727,765.41 × 200,721.37
  4. Step 4: Simplify right side
    485,083.31x = 146,078,067,255.77
  5. Step 5: Solve for x
    x = 146,078,067,255.77/485,083.31
  6. Step 6: Final answer
    x = 301,140.16

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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.