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Finding the Fourth Proportional to 203,380.92, 280,636.20 and 112,736.86

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Solution

The fourth proportional to 203,380.92, 280,636.20 and 112,736.86 is: 155,560.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,380.92 : 280,636.20 = 112,736.86 : x
  2. Step 2: Convert to fraction form
    203,380.92/280,636.20 = 112,736.86/x
  3. Step 3: Cross multiply
    203,380.92x = 280,636.20 × 112,736.86
  4. Step 4: Simplify right side
    203,380.92x = 31,638,043,288.74
  5. Step 5: Solve for x
    x = 31,638,043,288.74/203,380.92
  6. Step 6: Final answer
    x = 155,560.53

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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.