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Finding the Fourth Proportional to 272,556.90, 408,803.15 and 72,892.76

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Solution

The fourth proportional to 272,556.90, 408,803.15 and 72,892.76 is: 109,330.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,556.90 : 408,803.15 = 72,892.76 : x
  2. Step 2: Convert to fraction form
    272,556.90/408,803.15 = 72,892.76/x
  3. Step 3: Cross multiply
    272,556.90x = 408,803.15 × 72,892.76
  4. Step 4: Simplify right side
    272,556.90x = 29,798,788,071.06
  5. Step 5: Solve for x
    x = 29,798,788,071.06/272,556.90
  6. Step 6: Final answer
    x = 109,330.52

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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.