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Finding the Fourth Proportional to 324,100.20, 485,891.10 and 136,957.80

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Solution

The fourth proportional to 324,100.20, 485,891.10 and 136,957.80 is: 205,327.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,100.20 : 485,891.10 = 136,957.80 : x
  2. Step 2: Convert to fraction form
    324,100.20/485,891.10 = 136,957.80/x
  3. Step 3: Cross multiply
    324,100.20x = 485,891.10 × 136,957.80
  4. Step 4: Simplify right side
    324,100.20x = 66,546,576,095.58
  5. Step 5: Solve for x
    x = 66,546,576,095.58/324,100.20
  6. Step 6: Final answer
    x = 205,327.17

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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.