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Finding the Fourth Proportional to 203,493.63, 280,821.23 and 112,863.45

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Solution

The fourth proportional to 203,493.63, 280,821.23 and 112,863.45 is: 155,751.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,493.63 : 280,821.23 = 112,863.45 : x
  2. Step 2: Convert to fraction form
    203,493.63/280,821.23 = 112,863.45/x
  3. Step 3: Cross multiply
    203,493.63x = 280,821.23 × 112,863.45
  4. Step 4: Simplify right side
    203,493.63x = 31,694,450,882.62
  5. Step 5: Solve for x
    x = 31,694,450,882.62/203,493.63
  6. Step 6: Final answer
    x = 155,751.57

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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.