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Finding the Fourth Proportional to 491,516.67, 678,249.79 and 273,708.89

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Solution

The fourth proportional to 491,516.67, 678,249.79 and 273,708.89 is: 377,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,516.67 : 678,249.79 = 273,708.89 : x
  2. Step 2: Convert to fraction form
    491,516.67/678,249.79 = 273,708.89/x
  3. Step 3: Cross multiply
    491,516.67x = 678,249.79 × 273,708.89
  4. Step 4: Simplify right side
    491,516.67x = 185,642,996,786.26
  5. Step 5: Solve for x
    x = 185,642,996,786.26/491,516.67
  6. Step 6: Final answer
    x = 377,694.20

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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.