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Finding the Third Proportional to 190,869 and 286,209

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Solution

The third proportional to 190,869 and 286,209 is: 429,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,869 : 286,209 = 286,209 : x
  2. Step 2: Convert to fraction form
    190,869/286,209 = 286,209/x
  3. Step 3: Cross multiply
    190,869x = 286,209 × 286,209
  4. Step 4: Simplify right side
    190,869x = 81,915,591,681
  5. Step 5: Solve for x
    x = 81,915,591,681/190,869
  6. Step 6: Final answer
    x = 429,171.80

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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.