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Finding the Third Proportional to 308,658.50 and 440,534.50

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Solution

The third proportional to 308,658.50 and 440,534.50 is: 628,755.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,658.50 : 440,534.50 = 440,534.50 : x
  2. Step 2: Convert to fraction form
    308,658.50/440,534.50 = 440,534.50/x
  3. Step 3: Cross multiply
    308,658.50x = 440,534.50 × 440,534.50
  4. Step 4: Simplify right side
    308,658.50x = 194,070,645,690.25
  5. Step 5: Solve for x
    x = 194,070,645,690.25/308,658.50
  6. Step 6: Final answer
    x = 628,755.23

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.