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Finding the Third Proportional to 207,276 and 320,076

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Solution

The third proportional to 207,276 and 320,076 is: 494,261.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,276 : 320,076 = 320,076 : x
  2. Step 2: Convert to fraction form
    207,276/320,076 = 320,076/x
  3. Step 3: Cross multiply
    207,276x = 320,076 × 320,076
  4. Step 4: Simplify right side
    207,276x = 102,448,645,776
  5. Step 5: Solve for x
    x = 102,448,645,776/207,276
  6. Step 6: Final answer
    x = 494,261.98

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.