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Finding the Fourth Proportional to 203,405.90, 305,050.03 and 68,455.10

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Solution

The fourth proportional to 203,405.90, 305,050.03 and 68,455.10 is: 102,662.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,405.90 : 305,050.03 = 68,455.10 : x
  2. Step 2: Convert to fraction form
    203,405.90/305,050.03 = 68,455.10/x
  3. Step 3: Cross multiply
    203,405.90x = 305,050.03 × 68,455.10
  4. Step 4: Simplify right side
    203,405.90x = 20,882,230,282.85
  5. Step 5: Solve for x
    x = 20,882,230,282.85/203,405.90
  6. Step 6: Final answer
    x = 102,662.85

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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.