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Finding the Fourth Proportional to 203,449.39, 280,758.80 and 112,805.41

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Solution

The fourth proportional to 203,449.39, 280,758.80 and 112,805.41 is: 155,670.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,449.39 : 280,758.80 = 112,805.41 : x
  2. Step 2: Convert to fraction form
    203,449.39/280,758.80 = 112,805.41/x
  3. Step 3: Cross multiply
    203,449.39x = 280,758.80 × 112,805.41
  4. Step 4: Simplify right side
    203,449.39x = 31,671,110,981.08
  5. Step 5: Solve for x
    x = 31,671,110,981.08/203,449.39
  6. Step 6: Final answer
    x = 155,670.71

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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.