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Finding the Fourth Proportional to 363,391.88, 545,160.72 and 126,671

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Solution

The fourth proportional to 363,391.88, 545,160.72 and 126,671 is: 190,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,391.88 : 545,160.72 = 126,671 : x
  2. Step 2: Convert to fraction form
    363,391.88/545,160.72 = 126,671/x
  3. Step 3: Cross multiply
    363,391.88x = 545,160.72 × 126,671
  4. Step 4: Simplify right side
    363,391.88x = 69,056,053,563.12
  5. Step 5: Solve for x
    x = 69,056,053,563.12/363,391.88
  6. Step 6: Final answer
    x = 190,031.91

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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.