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Finding the Third Proportional to 207,908 and 383,420

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Solution

The third proportional to 207,908 and 383,420 is: 707,095.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,908 : 383,420 = 383,420 : x
  2. Step 2: Convert to fraction form
    207,908/383,420 = 383,420/x
  3. Step 3: Cross multiply
    207,908x = 383,420 × 383,420
  4. Step 4: Simplify right side
    207,908x = 147,010,896,400
  5. Step 5: Solve for x
    x = 147,010,896,400/207,908
  6. Step 6: Final answer
    x = 707,095.91

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.