Home / 367,986.30-551,979.45-321,330.30

Finding the Fourth Proportional to 367,986.30, 551,979.45 and 321,330.30

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Solution

The fourth proportional to 367,986.30, 551,979.45 and 321,330.30 is: 481,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,986.30 : 551,979.45 = 321,330.30 : x
  2. Step 2: Convert to fraction form
    367,986.30/551,979.45 = 321,330.30/x
  3. Step 3: Cross multiply
    367,986.30x = 551,979.45 × 321,330.30
  4. Step 4: Simplify right side
    367,986.30x = 177,367,722,262.34
  5. Step 5: Solve for x
    x = 177,367,722,262.34/367,986.30
  6. Step 6: Final answer
    x = 481,995.45

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Double scale
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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.