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Finding the Fourth Proportional to 485,802.12, 728,786.24 and 165,936.44

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Solution

The fourth proportional to 485,802.12, 728,786.24 and 165,936.44 is: 248,933.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,802.12 : 728,786.24 = 165,936.44 : x
  2. Step 2: Convert to fraction form
    485,802.12/728,786.24 = 165,936.44/x
  3. Step 3: Cross multiply
    485,802.12x = 728,786.24 × 165,936.44
  4. Step 4: Simplify right side
    485,802.12x = 120,932,194,186.59
  5. Step 5: Solve for x
    x = 120,932,194,186.59/485,802.12
  6. Step 6: Final answer
    x = 248,933.03

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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.