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Finding the Fourth Proportional to 272,556.75, 408,802.92 and 72,892.61

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Solution

The fourth proportional to 272,556.75, 408,802.92 and 72,892.61 is: 109,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,556.75 : 408,802.92 = 72,892.61 : x
  2. Step 2: Convert to fraction form
    272,556.75/408,802.92 = 72,892.61/x
  3. Step 3: Cross multiply
    272,556.75x = 408,802.92 × 72,892.61
  4. Step 4: Simplify right side
    272,556.75x = 29,798,711,576.76
  5. Step 5: Solve for x
    x = 29,798,711,576.76/272,556.75
  6. Step 6: Final answer
    x = 109,330.30

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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.