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Finding the Fourth Proportional to 203,381.08, 280,661.14 and 117,340.32

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Solution

The fourth proportional to 203,381.08, 280,661.14 and 117,340.32 is: 161,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,381.08 : 280,661.14 = 117,340.32 : x
  2. Step 2: Convert to fraction form
    203,381.08/280,661.14 = 117,340.32/x
  3. Step 3: Cross multiply
    203,381.08x = 280,661.14 × 117,340.32
  4. Step 4: Simplify right side
    203,381.08x = 32,932,867,979.16
  5. Step 5: Solve for x
    x = 32,932,867,979.16/203,381.08
  6. Step 6: Final answer
    x = 161,926.90

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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.