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Finding the Fourth Proportional to 203,763.60, 305,645.40 and 132,904.80

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Solution

The fourth proportional to 203,763.60, 305,645.40 and 132,904.80 is: 199,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,763.60 : 305,645.40 = 132,904.80 : x
  2. Step 2: Convert to fraction form
    203,763.60/305,645.40 = 132,904.80/x
  3. Step 3: Cross multiply
    203,763.60x = 305,645.40 × 132,904.80
  4. Step 4: Simplify right side
    203,763.60x = 40,621,740,757.92
  5. Step 5: Solve for x
    x = 40,621,740,757.92/203,763.60
  6. Step 6: Final answer
    x = 199,357.20

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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.