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Finding the Fourth Proportional to 203,933.70, 305,900.55 and 133,074.90

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Solution

The fourth proportional to 203,933.70, 305,900.55 and 133,074.90 is: 199,612.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,933.70 : 305,900.55 = 133,074.90 : x
  2. Step 2: Convert to fraction form
    203,933.70/305,900.55 = 133,074.90/x
  3. Step 3: Cross multiply
    203,933.70x = 305,900.55 × 133,074.90
  4. Step 4: Simplify right side
    203,933.70x = 40,707,685,101.20
  5. Step 5: Solve for x
    x = 40,707,685,101.20/203,933.70
  6. Step 6: Final answer
    x = 199,612.35

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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.