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Finding the Fourth Proportional to 402,607.10, 603,910.65 and 269,896.70

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Solution

The fourth proportional to 402,607.10, 603,910.65 and 269,896.70 is: 404,845.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,607.10 : 603,910.65 = 269,896.70 : x
  2. Step 2: Convert to fraction form
    402,607.10/603,910.65 = 269,896.70/x
  3. Step 3: Cross multiply
    402,607.10x = 603,910.65 × 269,896.70
  4. Step 4: Simplify right side
    402,607.10x = 162,993,491,529.86
  5. Step 5: Solve for x
    x = 162,993,491,529.86/402,607.10
  6. Step 6: Final answer
    x = 404,845.05

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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.