Home / 278,772.09-418,174.02-79,076.85

Finding the Fourth Proportional to 278,772.09, 418,174.02 and 79,076.85

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Solution

The fourth proportional to 278,772.09, 418,174.02 and 79,076.85 is: 118,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,772.09 : 418,174.02 = 79,076.85 : x
  2. Step 2: Convert to fraction form
    278,772.09/418,174.02 = 79,076.85/x
  3. Step 3: Cross multiply
    278,772.09x = 418,174.02 × 79,076.85
  4. Step 4: Simplify right side
    278,772.09x = 33,067,884,253.44
  5. Step 5: Solve for x
    x = 33,067,884,253.44/278,772.09
  6. Step 6: Final answer
    x = 118,619.78

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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.