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Finding the Fourth Proportional to 303,977.10, 455,965.65 and 279,093.90

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Solution

The fourth proportional to 303,977.10, 455,965.65 and 279,093.90 is: 418,640.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,977.10 : 455,965.65 = 279,093.90 : x
  2. Step 2: Convert to fraction form
    303,977.10/455,965.65 = 279,093.90/x
  3. Step 3: Cross multiply
    303,977.10x = 455,965.65 × 279,093.90
  4. Step 4: Simplify right side
    303,977.10x = 127,257,231,524.54
  5. Step 5: Solve for x
    x = 127,257,231,524.54/303,977.10
  6. Step 6: Final answer
    x = 418,640.85

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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.