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Finding the Third Proportional to 143,487.56 and 312,810.75

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Solution

The third proportional to 143,487.56 and 312,810.75 is: 681,944.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,487.56 : 312,810.75 = 312,810.75 : x
  2. Step 2: Convert to fraction form
    143,487.56/312,810.75 = 312,810.75/x
  3. Step 3: Cross multiply
    143,487.56x = 312,810.75 × 312,810.75
  4. Step 4: Simplify right side
    143,487.56x = 97,850,565,315.56
  5. Step 5: Solve for x
    x = 97,850,565,315.56/143,487.56
  6. Step 6: Final answer
    x = 681,944.58

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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.