Home / 327,918.96-492,118.20-209,879.28

Finding the Fourth Proportional to 327,918.96, 492,118.20 and 209,879.28

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Solution

The fourth proportional to 327,918.96, 492,118.20 and 209,879.28 is: 314,972.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,918.96 : 492,118.20 = 209,879.28 : x
  2. Step 2: Convert to fraction form
    327,918.96/492,118.20 = 209,879.28/x
  3. Step 3: Cross multiply
    327,918.96x = 492,118.20 × 209,879.28
  4. Step 4: Simplify right side
    327,918.96x = 103,285,413,490.90
  5. Step 5: Solve for x
    x = 103,285,413,490.90/327,918.96
  6. Step 6: Final answer
    x = 314,972.37

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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.