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Finding the Third Proportional to 143,684.25 and 312,239.75

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Solution

The third proportional to 143,684.25 and 312,239.75 is: 678,527.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,684.25 : 312,239.75 = 312,239.75 : x
  2. Step 2: Convert to fraction form
    143,684.25/312,239.75 = 312,239.75/x
  3. Step 3: Cross multiply
    143,684.25x = 312,239.75 × 312,239.75
  4. Step 4: Simplify right side
    143,684.25x = 97,493,661,480.06
  5. Step 5: Solve for x
    x = 97,493,661,480.06/143,684.25
  6. Step 6: Final answer
    x = 678,527.13

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.