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Finding the Fourth Proportional to 442,240.56, 663,353.55 and 126,690.48

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Solution

The fourth proportional to 442,240.56, 663,353.55 and 126,690.48 is: 190,033.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,240.56 : 663,353.55 = 126,690.48 : x
  2. Step 2: Convert to fraction form
    442,240.56/663,353.55 = 126,690.48/x
  3. Step 3: Cross multiply
    442,240.56x = 663,353.55 × 126,690.48
  4. Step 4: Simplify right side
    442,240.56x = 84,040,579,659.20
  5. Step 5: Solve for x
    x = 84,040,579,659.20/442,240.56
  6. Step 6: Final answer
    x = 190,033.63

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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.