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Finding the Fourth Proportional to 272,292.80, 407,632.80 and 202,481.60

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Solution

The fourth proportional to 272,292.80, 407,632.80 and 202,481.60 is: 303,122.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,292.80 : 407,632.80 = 202,481.60 : x
  2. Step 2: Convert to fraction form
    272,292.80/407,632.80 = 202,481.60/x
  3. Step 3: Cross multiply
    272,292.80x = 407,632.80 × 202,481.60
  4. Step 4: Simplify right side
    272,292.80x = 82,538,141,556.48
  5. Step 5: Solve for x
    x = 82,538,141,556.48/272,292.80
  6. Step 6: Final answer
    x = 303,122.75

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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.