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Finding the Fourth Proportional to 485,239.92, 728,268.84 and 204,958.32

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Solution

The fourth proportional to 485,239.92, 728,268.84 and 204,958.32 is: 307,610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,239.92 : 728,268.84 = 204,958.32 : x
  2. Step 2: Convert to fraction form
    485,239.92/728,268.84 = 204,958.32/x
  3. Step 3: Cross multiply
    485,239.92x = 728,268.84 × 204,958.32
  4. Step 4: Simplify right side
    485,239.92x = 149,264,757,954.75
  5. Step 5: Solve for x
    x = 149,264,757,954.75/485,239.92
  6. Step 6: Final answer
    x = 307,610.22

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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.