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Finding the Third Proportional to 90,275 and 198,054

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Solution

The third proportional to 90,275 and 198,054 is: 434,509.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,275 : 198,054 = 198,054 : x
  2. Step 2: Convert to fraction form
    90,275/198,054 = 198,054/x
  3. Step 3: Cross multiply
    90,275x = 198,054 × 198,054
  4. Step 4: Simplify right side
    90,275x = 39,225,386,916
  5. Step 5: Solve for x
    x = 39,225,386,916/90,275
  6. Step 6: Final answer
    x = 434,509.96

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.