Home / 203,209.30-280,401.06-112,542.88

Finding the Fourth Proportional to 203,209.30, 280,401.06 and 112,542.88

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Solution

The fourth proportional to 203,209.30, 280,401.06 and 112,542.88 is: 155,293.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,209.30 : 280,401.06 = 112,542.88 : x
  2. Step 2: Convert to fraction form
    203,209.30/280,401.06 = 112,542.88/x
  3. Step 3: Cross multiply
    203,209.30x = 280,401.06 × 112,542.88
  4. Step 4: Simplify right side
    203,209.30x = 31,557,142,847.45
  5. Step 5: Solve for x
    x = 31,557,142,847.45/203,209.30
  6. Step 6: Final answer
    x = 155,293.79

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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.