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Finding the Fourth Proportional to 485,896.20, 728,855.82 and 186,525.96

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Solution

The fourth proportional to 485,896.20, 728,855.82 and 186,525.96 is: 279,793.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,896.20 : 728,855.82 = 186,525.96 : x
  2. Step 2: Convert to fraction form
    485,896.20/728,855.82 = 186,525.96/x
  3. Step 3: Cross multiply
    485,896.20x = 728,855.82 × 186,525.96
  4. Step 4: Simplify right side
    485,896.20x = 135,950,531,527.09
  5. Step 5: Solve for x
    x = 135,950,531,527.09/485,896.20
  6. Step 6: Final answer
    x = 279,793.36

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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.