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Finding the Third Proportional to 211,690 and 457,508

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Solution

The third proportional to 211,690 and 457,508 is: 988,774.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,690 : 457,508 = 457,508 : x
  2. Step 2: Convert to fraction form
    211,690/457,508 = 457,508/x
  3. Step 3: Cross multiply
    211,690x = 457,508 × 457,508
  4. Step 4: Simplify right side
    211,690x = 209,313,570,064
  5. Step 5: Solve for x
    x = 209,313,570,064/211,690
  6. Step 6: Final answer
    x = 988,774.01

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.