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Finding the Third Proportional to 252,288 and 379,485

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Solution

The third proportional to 252,288 and 379,485 is: 570,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,288 : 379,485 = 379,485 : x
  2. Step 2: Convert to fraction form
    252,288/379,485 = 379,485/x
  3. Step 3: Cross multiply
    252,288x = 379,485 × 379,485
  4. Step 4: Simplify right side
    252,288x = 144,008,865,225
  5. Step 5: Solve for x
    x = 144,008,865,225/252,288
  6. Step 6: Final answer
    x = 570,811.40

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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.