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Finding the Fourth Proportional to 485,577.60, 728,107.20 and 204,777.60

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Solution

The fourth proportional to 485,577.60, 728,107.20 and 204,777.60 is: 307,057.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,577.60 : 728,107.20 = 204,777.60 : x
  2. Step 2: Convert to fraction form
    485,577.60/728,107.20 = 204,777.60/x
  3. Step 3: Cross multiply
    485,577.60x = 728,107.20 × 204,777.60
  4. Step 4: Simplify right side
    485,577.60x = 149,100,044,958.72
  5. Step 5: Solve for x
    x = 149,100,044,958.72/485,577.60
  6. Step 6: Final answer
    x = 307,057.09

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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.