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Finding the Fourth Proportional to 203,907.72, 305,861.58 and 63,678.36

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Solution

The fourth proportional to 203,907.72, 305,861.58 and 63,678.36 is: 95,517.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,907.72 : 305,861.58 = 63,678.36 : x
  2. Step 2: Convert to fraction form
    203,907.72/305,861.58 = 63,678.36/x
  3. Step 3: Cross multiply
    203,907.72x = 305,861.58 × 63,678.36
  4. Step 4: Simplify right side
    203,907.72x = 19,476,763,801.41
  5. Step 5: Solve for x
    x = 19,476,763,801.41/203,907.72
  6. Step 6: Final answer
    x = 95,517.54

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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.