Home / 203,422.21-280,739.28-112,806.60

Finding the Fourth Proportional to 203,422.21, 280,739.28 and 112,806.60

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Solution

The fourth proportional to 203,422.21, 280,739.28 and 112,806.60 is: 155,682.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,422.21 : 280,739.28 = 112,806.60 : x
  2. Step 2: Convert to fraction form
    203,422.21/280,739.28 = 112,806.60/x
  3. Step 3: Cross multiply
    203,422.21x = 280,739.28 × 112,806.60
  4. Step 4: Simplify right side
    203,422.21x = 31,669,243,663.25
  5. Step 5: Solve for x
    x = 31,669,243,663.25/203,422.21
  6. Step 6: Final answer
    x = 155,682.33

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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.