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Finding the Third Proportional to 142,573 and 306,206

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Solution

The third proportional to 142,573 and 306,206 is: 657,642.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,573 : 306,206 = 306,206 : x
  2. Step 2: Convert to fraction form
    142,573/306,206 = 306,206/x
  3. Step 3: Cross multiply
    142,573x = 306,206 × 306,206
  4. Step 4: Simplify right side
    142,573x = 93,762,114,436
  5. Step 5: Solve for x
    x = 93,762,114,436/142,573
  6. Step 6: Final answer
    x = 657,642.85

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.