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Finding the Third Proportional to 213,810 and 461,520

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Solution

The third proportional to 213,810 and 461,520 is: 996,214.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,810 : 461,520 = 461,520 : x
  2. Step 2: Convert to fraction form
    213,810/461,520 = 461,520/x
  3. Step 3: Cross multiply
    213,810x = 461,520 × 461,520
  4. Step 4: Simplify right side
    213,810x = 213,000,710,400
  5. Step 5: Solve for x
    x = 213,000,710,400/213,810
  6. Step 6: Final answer
    x = 996,214.91

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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.