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Finding the Fourth Proportional to 489,767.54, 675,856.45 and 271,990.04

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Solution

The fourth proportional to 489,767.54, 675,856.45 and 271,990.04 is: 375,333.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,767.54 : 675,856.45 = 271,990.04 : x
  2. Step 2: Convert to fraction form
    489,767.54/675,856.45 = 271,990.04/x
  3. Step 3: Cross multiply
    489,767.54x = 675,856.45 × 271,990.04
  4. Step 4: Simplify right side
    489,767.54x = 183,826,222,869.76
  5. Step 5: Solve for x
    x = 183,826,222,869.76/489,767.54
  6. Step 6: Final answer
    x = 375,333.62

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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.