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Finding the Third Proportional to 210,621 and 454,455

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Solution

The third proportional to 210,621 and 454,455 is: 980,573.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,621 : 454,455 = 454,455 : x
  2. Step 2: Convert to fraction form
    210,621/454,455 = 454,455/x
  3. Step 3: Cross multiply
    210,621x = 454,455 × 454,455
  4. Step 4: Simplify right side
    210,621x = 206,529,347,025
  5. Step 5: Solve for x
    x = 206,529,347,025/210,621
  6. Step 6: Final answer
    x = 980,573.39

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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.