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Finding the Third Proportional to 308,391 and 461,320.50

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Solution

The third proportional to 308,391 and 461,320.50 is: 690,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,391 : 461,320.50 = 461,320.50 : x
  2. Step 2: Convert to fraction form
    308,391/461,320.50 = 461,320.50/x
  3. Step 3: Cross multiply
    308,391x = 461,320.50 × 461,320.50
  4. Step 4: Simplify right side
    308,391x = 212,816,603,720.25
  5. Step 5: Solve for x
    x = 212,816,603,720.25/308,391
  6. Step 6: Final answer
    x = 690,086.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.