Home / 387,519.76-580,738.32-187,787.14

Finding the Fourth Proportional to 387,519.76, 580,738.32 and 187,787.14

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Solution

The fourth proportional to 387,519.76, 580,738.32 and 187,787.14 is: 281,418.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,519.76 : 580,738.32 = 187,787.14 : x
  2. Step 2: Convert to fraction form
    387,519.76/580,738.32 = 187,787.14/x
  3. Step 3: Cross multiply
    387,519.76x = 580,738.32 × 187,787.14
  4. Step 4: Simplify right side
    387,519.76x = 109,055,188,201.21
  5. Step 5: Solve for x
    x = 109,055,188,201.21/387,519.76
  6. Step 6: Final answer
    x = 281,418.39

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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.