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Finding the Fourth Proportional to 268,736.01, 403,090.68 and 100,243.20

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Solution

The fourth proportional to 268,736.01, 403,090.68 and 100,243.20 is: 150,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,736.01 : 403,090.68 = 100,243.20 : x
  2. Step 2: Convert to fraction form
    268,736.01/403,090.68 = 100,243.20/x
  3. Step 3: Cross multiply
    268,736.01x = 403,090.68 × 100,243.20
  4. Step 4: Simplify right side
    268,736.01x = 40,407,099,653.38
  5. Step 5: Solve for x
    x = 40,407,099,653.38/268,736.01
  6. Step 6: Final answer
    x = 150,359.83

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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.