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Finding the Third Proportional to 213,696 and 457,040

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Solution

The third proportional to 213,696 and 457,040 is: 977,489.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,696 : 457,040 = 457,040 : x
  2. Step 2: Convert to fraction form
    213,696/457,040 = 457,040/x
  3. Step 3: Cross multiply
    213,696x = 457,040 × 457,040
  4. Step 4: Simplify right side
    213,696x = 208,885,561,600
  5. Step 5: Solve for x
    x = 208,885,561,600/213,696
  6. Step 6: Final answer
    x = 977,489.34

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.