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Finding the Third Proportional to 321,368 and 472,107

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Solution

The third proportional to 321,368 and 472,107 is: 693,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,368 : 472,107 = 472,107 : x
  2. Step 2: Convert to fraction form
    321,368/472,107 = 472,107/x
  3. Step 3: Cross multiply
    321,368x = 472,107 × 472,107
  4. Step 4: Simplify right side
    321,368x = 222,885,019,449
  5. Step 5: Solve for x
    x = 222,885,019,449/321,368
  6. Step 6: Final answer
    x = 693,550.76

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.