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Finding the Fourth Proportional to 404,314.10, 606,471.15 and 279,898.10

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Solution

The fourth proportional to 404,314.10, 606,471.15 and 279,898.10 is: 419,847.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,314.10 : 606,471.15 = 279,898.10 : x
  2. Step 2: Convert to fraction form
    404,314.10/606,471.15 = 279,898.10/x
  3. Step 3: Cross multiply
    404,314.10x = 606,471.15 × 279,898.10
  4. Step 4: Simplify right side
    404,314.10x = 169,750,122,589.82
  5. Step 5: Solve for x
    x = 169,750,122,589.82/404,314.10
  6. Step 6: Final answer
    x = 419,847.15

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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.