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Finding the Fourth Proportional to 387,264.21, 580,481.01 and 187,309.54

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Solution

The fourth proportional to 387,264.21, 580,481.01 and 187,309.54 is: 280,763.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,264.21 : 580,481.01 = 187,309.54 : x
  2. Step 2: Convert to fraction form
    387,264.21/580,481.01 = 187,309.54/x
  3. Step 3: Cross multiply
    387,264.21x = 580,481.01 × 187,309.54
  4. Step 4: Simplify right side
    387,264.21x = 108,729,627,122.88
  5. Step 5: Solve for x
    x = 108,729,627,122.88/387,264.21
  6. Step 6: Final answer
    x = 280,763.43

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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.