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Finding the Fourth Proportional to 227,399.40, 340,723.67 and 138,383.64

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Solution

The fourth proportional to 227,399.40, 340,723.67 and 138,383.64 is: 207,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,399.40 : 340,723.67 = 138,383.64 : x
  2. Step 2: Convert to fraction form
    227,399.40/340,723.67 = 138,383.64/x
  3. Step 3: Cross multiply
    227,399.40x = 340,723.67 × 138,383.64
  4. Step 4: Simplify right side
    227,399.40x = 47,150,580,996.84
  5. Step 5: Solve for x
    x = 47,150,580,996.84/227,399.40
  6. Step 6: Final answer
    x = 207,346.99

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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.