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Finding the Third Proportional to 155,330 and 245,512

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Solution

The third proportional to 155,330 and 245,512 is: 388,052.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,330 : 245,512 = 245,512 : x
  2. Step 2: Convert to fraction form
    155,330/245,512 = 245,512/x
  3. Step 3: Cross multiply
    155,330x = 245,512 × 245,512
  4. Step 4: Simplify right side
    155,330x = 60,276,142,144
  5. Step 5: Solve for x
    x = 60,276,142,144/155,330
  6. Step 6: Final answer
    x = 388,052.16

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.