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Finding the Third Proportional to 207,272 and 455,152

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Solution

The third proportional to 207,272 and 455,152 is: 999,475.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,272 : 455,152 = 455,152 : x
  2. Step 2: Convert to fraction form
    207,272/455,152 = 455,152/x
  3. Step 3: Cross multiply
    207,272x = 455,152 × 455,152
  4. Step 4: Simplify right side
    207,272x = 207,163,343,104
  5. Step 5: Solve for x
    x = 207,163,343,104/207,272
  6. Step 6: Final answer
    x = 999,475.78

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.