Home / 287,822.97-431,735.27-100,790.73

Finding the Fourth Proportional to 287,822.97, 431,735.27 and 100,790.73

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Solution

The fourth proportional to 287,822.97, 431,735.27 and 100,790.73 is: 151,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,822.97 : 431,735.27 = 100,790.73 : x
  2. Step 2: Convert to fraction form
    287,822.97/431,735.27 = 100,790.73/x
  3. Step 3: Cross multiply
    287,822.97x = 431,735.27 × 100,790.73
  4. Step 4: Simplify right side
    287,822.97x = 43,514,912,526.09
  5. Step 5: Solve for x
    x = 43,514,912,526.09/287,822.97
  6. Step 6: Final answer
    x = 151,186.38

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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.