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Finding the Third Proportional to 90,127.50 and 208,639.50

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Solution

The third proportional to 90,127.50 and 208,639.50 is: 482,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,127.50 : 208,639.50 = 208,639.50 : x
  2. Step 2: Convert to fraction form
    90,127.50/208,639.50 = 208,639.50/x
  3. Step 3: Cross multiply
    90,127.50x = 208,639.50 × 208,639.50
  4. Step 4: Simplify right side
    90,127.50x = 43,530,440,960.25
  5. Step 5: Solve for x
    x = 43,530,440,960.25/90,127.50
  6. Step 6: Final answer
    x = 482,987.33

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.