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Finding the Fourth Proportional to 387,250.47, 580,738.26 and 113,620.31

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Solution

The fourth proportional to 387,250.47, 580,738.26 and 113,620.31 is: 170,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,250.47 : 580,738.26 = 113,620.31 : x
  2. Step 2: Convert to fraction form
    387,250.47/580,738.26 = 113,620.31/x
  3. Step 3: Cross multiply
    387,250.47x = 580,738.26 × 113,620.31
  4. Step 4: Simplify right side
    387,250.47x = 65,983,659,871.54
  5. Step 5: Solve for x
    x = 65,983,659,871.54/387,250.47
  6. Step 6: Final answer
    x = 170,390.14

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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.