Home / 203,208.30-280,399.68-112,541.88

Finding the Fourth Proportional to 203,208.30, 280,399.68 and 112,541.88

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Solution

The fourth proportional to 203,208.30, 280,399.68 and 112,541.88 is: 155,292.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,208.30 : 280,399.68 = 112,541.88 : x
  2. Step 2: Convert to fraction form
    203,208.30/280,399.68 = 112,541.88/x
  3. Step 3: Cross multiply
    203,208.30x = 280,399.68 × 112,541.88
  4. Step 4: Simplify right side
    203,208.30x = 31,556,707,138.60
  5. Step 5: Solve for x
    x = 31,556,707,138.60/203,208.30
  6. Step 6: Final answer
    x = 155,292.41

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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.