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Finding the Fourth Proportional to 482,849.64, 666,414.97 and 278,863.90

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Solution

The fourth proportional to 482,849.64, 666,414.97 and 278,863.90 is: 384,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,849.64 : 666,414.97 = 278,863.90 : x
  2. Step 2: Convert to fraction form
    482,849.64/666,414.97 = 278,863.90/x
  3. Step 3: Cross multiply
    482,849.64x = 666,414.97 × 278,863.90
  4. Step 4: Simplify right side
    482,849.64x = 185,839,075,189.39
  5. Step 5: Solve for x
    x = 185,839,075,189.39/482,849.64
  6. Step 6: Final answer
    x = 384,879.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.