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Finding the Third Proportional to 90,903.50 and 198,330.50

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Solution

The third proportional to 90,903.50 and 198,330.50 is: 432,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,903.50 : 198,330.50 = 198,330.50 : x
  2. Step 2: Convert to fraction form
    90,903.50/198,330.50 = 198,330.50/x
  3. Step 3: Cross multiply
    90,903.50x = 198,330.50 × 198,330.50
  4. Step 4: Simplify right side
    90,903.50x = 39,334,987,230.25
  5. Step 5: Solve for x
    x = 39,334,987,230.25/90,903.50
  6. Step 6: Final answer
    x = 432,711.47

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.