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Finding the Fourth Proportional to 363,419.38, 545,202.06 and 126,698.50

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Solution

The fourth proportional to 363,419.38, 545,202.06 and 126,698.50 is: 190,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,419.38 : 545,202.06 = 126,698.50 : x
  2. Step 2: Convert to fraction form
    363,419.38/545,202.06 = 126,698.50/x
  3. Step 3: Cross multiply
    363,419.38x = 545,202.06 × 126,698.50
  4. Step 4: Simplify right side
    363,419.38x = 69,076,283,198.91
  5. Step 5: Solve for x
    x = 69,076,283,198.91/363,419.38
  6. Step 6: Final answer
    x = 190,073.20

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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.