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Finding the Third Proportional to 250,990 and 489,370

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Solution

The third proportional to 250,990 and 489,370 is: 954,153.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,990 : 489,370 = 489,370 : x
  2. Step 2: Convert to fraction form
    250,990/489,370 = 489,370/x
  3. Step 3: Cross multiply
    250,990x = 489,370 × 489,370
  4. Step 4: Simplify right side
    250,990x = 239,482,996,900
  5. Step 5: Solve for x
    x = 239,482,996,900/250,990
  6. Step 6: Final answer
    x = 954,153.54

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.