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Finding the Fourth Proportional to 303,734.56, 455,638.29 and 126,361.57

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Solution

The fourth proportional to 303,734.56, 455,638.29 and 126,361.57 is: 189,557.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,734.56 : 455,638.29 = 126,361.57 : x
  2. Step 2: Convert to fraction form
    303,734.56/455,638.29 = 126,361.57/x
  3. Step 3: Cross multiply
    303,734.56x = 455,638.29 × 126,361.57
  4. Step 4: Simplify right side
    303,734.56x = 57,575,169,676.52
  5. Step 5: Solve for x
    x = 57,575,169,676.52/303,734.56
  6. Step 6: Final answer
    x = 189,557.52

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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.