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Finding the Fourth Proportional to 363,542.90, 545,563.50 and 126,885.58

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Solution

The fourth proportional to 363,542.90, 545,563.50 and 126,885.58 is: 190,415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,542.90 : 545,563.50 = 126,885.58 : x
  2. Step 2: Convert to fraction form
    363,542.90/545,563.50 = 126,885.58/x
  3. Step 3: Cross multiply
    363,542.90x = 545,563.50 × 126,885.58
  4. Step 4: Simplify right side
    363,542.90x = 69,224,139,231.13
  5. Step 5: Solve for x
    x = 69,224,139,231.13/363,542.90
  6. Step 6: Final answer
    x = 190,415.33

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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.