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Finding the Third Proportional to 207,520 and 316,464

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Solution

The third proportional to 207,520 and 316,464 is: 482,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,520 : 316,464 = 316,464 : x
  2. Step 2: Convert to fraction form
    207,520/316,464 = 316,464/x
  3. Step 3: Cross multiply
    207,520x = 316,464 × 316,464
  4. Step 4: Simplify right side
    207,520x = 100,149,463,296
  5. Step 5: Solve for x
    x = 100,149,463,296/207,520
  6. Step 6: Final answer
    x = 482,601.50

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.