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Finding the Third Proportional to 242,691 and 379,880

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Solution

The third proportional to 242,691 and 379,880 is: 594,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,691 : 379,880 = 379,880 : x
  2. Step 2: Convert to fraction form
    242,691/379,880 = 379,880/x
  3. Step 3: Cross multiply
    242,691x = 379,880 × 379,880
  4. Step 4: Simplify right side
    242,691x = 144,308,814,400
  5. Step 5: Solve for x
    x = 144,308,814,400/242,691
  6. Step 6: Final answer
    x = 594,619.55

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.