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Finding the Fourth Proportional to 303,738.56, 455,644.32 and 126,365.60

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Solution

The fourth proportional to 303,738.56, 455,644.32 and 126,365.60 is: 189,563.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,738.56 : 455,644.32 = 126,365.60 : x
  2. Step 2: Convert to fraction form
    303,738.56/455,644.32 = 126,365.60/x
  3. Step 3: Cross multiply
    303,738.56x = 455,644.32 × 126,365.60
  4. Step 4: Simplify right side
    303,738.56x = 57,577,767,883.39
  5. Step 5: Solve for x
    x = 57,577,767,883.39/303,738.56
  6. Step 6: Final answer
    x = 189,563.58

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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.