Home / 287,542.46-431,391.33-87,857.37

Finding the Fourth Proportional to 287,542.46, 431,391.33 and 87,857.37

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Solution

The fourth proportional to 287,542.46, 431,391.33 and 87,857.37 is: 131,809.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,542.46 : 431,391.33 = 87,857.37 : x
  2. Step 2: Convert to fraction form
    287,542.46/431,391.33 = 87,857.37/x
  3. Step 3: Cross multiply
    287,542.46x = 431,391.33 × 87,857.37
  4. Step 4: Simplify right side
    287,542.46x = 37,900,907,694.60
  5. Step 5: Solve for x
    x = 37,900,907,694.60/287,542.46
  6. Step 6: Final answer
    x = 131,809.78

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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.