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Finding the Third Proportional to 207,312 and 320,132

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Solution

The third proportional to 207,312 and 320,132 is: 494,349.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,312 : 320,132 = 320,132 : x
  2. Step 2: Convert to fraction form
    207,312/320,132 = 320,132/x
  3. Step 3: Cross multiply
    207,312x = 320,132 × 320,132
  4. Step 4: Simplify right side
    207,312x = 102,484,497,424
  5. Step 5: Solve for x
    x = 102,484,497,424/207,312
  6. Step 6: Final answer
    x = 494,349.08

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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.