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Finding the Fourth Proportional to 204,005.48, 305,890.50 and 79,200.68

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Solution

The fourth proportional to 204,005.48, 305,890.50 and 79,200.68 is: 118,755.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,005.48 : 305,890.50 = 79,200.68 : x
  2. Step 2: Convert to fraction form
    204,005.48/305,890.50 = 79,200.68/x
  3. Step 3: Cross multiply
    204,005.48x = 305,890.50 × 79,200.68
  4. Step 4: Simplify right side
    204,005.48x = 24,226,735,605.54
  5. Step 5: Solve for x
    x = 24,226,735,605.54/204,005.48
  6. Step 6: Final answer
    x = 118,755.32

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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.