Home / 287,822.43-431,472.29-100,731.87

Finding the Fourth Proportional to 287,822.43, 431,472.29 and 100,731.87

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Solution

The fourth proportional to 287,822.43, 431,472.29 and 100,731.87 is: 151,006.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,822.43 : 431,472.29 = 100,731.87 : x
  2. Step 2: Convert to fraction form
    287,822.43/431,472.29 = 100,731.87/x
  3. Step 3: Cross multiply
    287,822.43x = 431,472.29 × 100,731.87
  4. Step 4: Simplify right side
    287,822.43x = 43,463,010,121.22
  5. Step 5: Solve for x
    x = 43,463,010,121.22/287,822.43
  6. Step 6: Final answer
    x = 151,006.33

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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.