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Finding the Third Proportional to 212,121 and 457,459

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Solution

The third proportional to 212,121 and 457,459 is: 986,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,121 : 457,459 = 457,459 : x
  2. Step 2: Convert to fraction form
    212,121/457,459 = 457,459/x
  3. Step 3: Cross multiply
    212,121x = 457,459 × 457,459
  4. Step 4: Simplify right side
    212,121x = 209,268,736,681
  5. Step 5: Solve for x
    x = 209,268,736,681/212,121
  6. Step 6: Final answer
    x = 986,553.60

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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.