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Finding the Third Proportional to 143,405.50 and 221,936.50

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Solution

The third proportional to 143,405.50 and 221,936.50 is: 343,472.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,405.50 : 221,936.50 = 221,936.50 : x
  2. Step 2: Convert to fraction form
    143,405.50/221,936.50 = 221,936.50/x
  3. Step 3: Cross multiply
    143,405.50x = 221,936.50 × 221,936.50
  4. Step 4: Simplify right side
    143,405.50x = 49,255,810,032.25
  5. Step 5: Solve for x
    x = 49,255,810,032.25/143,405.50
  6. Step 6: Final answer
    x = 343,472.25

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.