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Finding the Fourth Proportional to 203,633.26, 305,450.90 and 83,755.58

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Solution

The fourth proportional to 203,633.26, 305,450.90 and 83,755.58 is: 125,633.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,633.26 : 305,450.90 = 83,755.58 : x
  2. Step 2: Convert to fraction form
    203,633.26/305,450.90 = 83,755.58/x
  3. Step 3: Cross multiply
    203,633.26x = 305,450.90 × 83,755.58
  4. Step 4: Simplify right side
    203,633.26x = 25,583,217,291.02
  5. Step 5: Solve for x
    x = 25,583,217,291.02/203,633.26
  6. Step 6: Final answer
    x = 125,633.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.