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Finding the Fourth Proportional to 442,567.38, 663,949.80 and 126,999.70

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Solution

The fourth proportional to 442,567.38, 663,949.80 and 126,999.70 is: 190,527.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,567.38 : 663,949.80 = 126,999.70 : x
  2. Step 2: Convert to fraction form
    442,567.38/663,949.80 = 126,999.70/x
  3. Step 3: Cross multiply
    442,567.38x = 663,949.80 × 126,999.70
  4. Step 4: Simplify right side
    442,567.38x = 84,321,425,415.06
  5. Step 5: Solve for x
    x = 84,321,425,415.06/442,567.38
  6. Step 6: Final answer
    x = 190,527.88

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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.