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Finding the Fourth Proportional to 203,403.56, 280,696.14 and 113,979.56

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Solution

The fourth proportional to 203,403.56, 280,696.14 and 113,979.56 is: 157,291.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,403.56 : 280,696.14 = 113,979.56 : x
  2. Step 2: Convert to fraction form
    203,403.56/280,696.14 = 113,979.56/x
  3. Step 3: Cross multiply
    203,403.56x = 280,696.14 × 113,979.56
  4. Step 4: Simplify right side
    203,403.56x = 31,993,622,530.90
  5. Step 5: Solve for x
    x = 31,993,622,530.90/203,403.56
  6. Step 6: Final answer
    x = 157,291.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.