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Finding the Fourth Proportional to 485,810.70, 728,716.05 and 170,226.60

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Solution

The fourth proportional to 485,810.70, 728,716.05 and 170,226.60 is: 255,339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,810.70 : 728,716.05 = 170,226.60 : x
  2. Step 2: Convert to fraction form
    485,810.70/728,716.05 = 170,226.60/x
  3. Step 3: Cross multiply
    485,810.70x = 728,716.05 × 170,226.60
  4. Step 4: Simplify right side
    485,810.70x = 124,046,855,556.93
  5. Step 5: Solve for x
    x = 124,046,855,556.93/485,810.70
  6. Step 6: Final answer
    x = 255,339.90

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Similar ratio
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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.