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Finding the Third Proportional to 198,270 and 282,642

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Solution

The third proportional to 198,270 and 282,642 is: 402,917.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,270 : 282,642 = 282,642 : x
  2. Step 2: Convert to fraction form
    198,270/282,642 = 282,642/x
  3. Step 3: Cross multiply
    198,270x = 282,642 × 282,642
  4. Step 4: Simplify right side
    198,270x = 79,886,500,164
  5. Step 5: Solve for x
    x = 79,886,500,164/198,270
  6. Step 6: Final answer
    x = 402,917.74

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.