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Finding the Fourth Proportional to 499,422.14, 689,205.21 and 273,067.64

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Solution

The fourth proportional to 499,422.14, 689,205.21 and 273,067.64 is: 376,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,422.14 : 689,205.21 = 273,067.64 : x
  2. Step 2: Convert to fraction form
    499,422.14/689,205.21 = 273,067.64/x
  3. Step 3: Cross multiply
    499,422.14x = 689,205.21 × 273,067.64
  4. Step 4: Simplify right side
    499,422.14x = 188,199,640,170.40
  5. Step 5: Solve for x
    x = 188,199,640,170.40/499,422.14
  6. Step 6: Final answer
    x = 376,834.80

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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.