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Finding the Third Proportional to 212,138 and 457,484

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Solution

The third proportional to 212,138 and 457,484 is: 986,582.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,138 : 457,484 = 457,484 : x
  2. Step 2: Convert to fraction form
    212,138/457,484 = 457,484/x
  3. Step 3: Cross multiply
    212,138x = 457,484 × 457,484
  4. Step 4: Simplify right side
    212,138x = 209,291,610,256
  5. Step 5: Solve for x
    x = 209,291,610,256/212,138
  6. Step 6: Final answer
    x = 986,582.37

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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.