Home / 321,945.10-482,917.65-85,324.30

Finding the Fourth Proportional to 321,945.10, 482,917.65 and 85,324.30

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Solution

The fourth proportional to 321,945.10, 482,917.65 and 85,324.30 is: 127,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,945.10 : 482,917.65 = 85,324.30 : x
  2. Step 2: Convert to fraction form
    321,945.10/482,917.65 = 85,324.30/x
  3. Step 3: Cross multiply
    321,945.10x = 482,917.65 × 85,324.30
  4. Step 4: Simplify right side
    321,945.10x = 41,204,610,443.90
  5. Step 5: Solve for x
    x = 41,204,610,443.90/321,945.10
  6. Step 6: Final answer
    x = 127,986.45

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Similar ratio
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1.5x scale

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.