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Finding the Third Proportional to 210,896 and 455,515

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Solution

The third proportional to 210,896 and 455,515 is: 983,868.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,896 : 455,515 = 455,515 : x
  2. Step 2: Convert to fraction form
    210,896/455,515 = 455,515/x
  3. Step 3: Cross multiply
    210,896x = 455,515 × 455,515
  4. Step 4: Simplify right side
    210,896x = 207,493,915,225
  5. Step 5: Solve for x
    x = 207,493,915,225/210,896
  6. Step 6: Final answer
    x = 983,868.42

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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.