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Finding the Third Proportional to 207,911 and 383,423

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Solution

The third proportional to 207,911 and 383,423 is: 707,096.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,911 : 383,423 = 383,423 : x
  2. Step 2: Convert to fraction form
    207,911/383,423 = 383,423/x
  3. Step 3: Cross multiply
    207,911x = 383,423 × 383,423
  4. Step 4: Simplify right side
    207,911x = 147,013,196,929
  5. Step 5: Solve for x
    x = 147,013,196,929/207,911
  6. Step 6: Final answer
    x = 707,096.77

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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.