Home / 272,228.20-408,425.37-139,201.90

Finding the Fourth Proportional to 272,228.20, 408,425.37 and 139,201.90

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Solution

The fourth proportional to 272,228.20, 408,425.37 and 139,201.90 is: 208,845.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,228.20 : 408,425.37 = 139,201.90 : x
  2. Step 2: Convert to fraction form
    272,228.20/408,425.37 = 139,201.90/x
  3. Step 3: Cross multiply
    272,228.20x = 408,425.37 × 139,201.90
  4. Step 4: Simplify right side
    272,228.20x = 56,853,587,512.20
  5. Step 5: Solve for x
    x = 56,853,587,512.20/272,228.20
  6. Step 6: Final answer
    x = 208,845.33

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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.