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Finding the Fourth Proportional to 489,819.28, 675,950.28 and 274,959.76

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Solution

The fourth proportional to 489,819.28, 675,950.28 and 274,959.76 is: 379,444.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,819.28 : 675,950.28 = 274,959.76 : x
  2. Step 2: Convert to fraction form
    489,819.28/675,950.28 = 274,959.76/x
  3. Step 3: Cross multiply
    489,819.28x = 675,950.28 × 274,959.76
  4. Step 4: Simplify right side
    489,819.28x = 185,859,126,760.73
  5. Step 5: Solve for x
    x = 185,859,126,760.73/489,819.28
  6. Step 6: Final answer
    x = 379,444.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.