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Finding the Fourth Proportional to 485,370.39, 728,383.64 and 169,830.03

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Solution

The fourth proportional to 485,370.39, 728,383.64 and 169,830.03 is: 254,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,370.39 : 728,383.64 = 169,830.03 : x
  2. Step 2: Convert to fraction form
    485,370.39/728,383.64 = 169,830.03/x
  3. Step 3: Cross multiply
    485,370.39x = 728,383.64 × 169,830.03
  4. Step 4: Simplify right side
    485,370.39x = 123,701,414,583.56
  5. Step 5: Solve for x
    x = 123,701,414,583.56/485,370.39
  6. Step 6: Final answer
    x = 254,859.83

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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.