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Finding the Third Proportional to 143,485.17 and 312,805.55

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Solution

The third proportional to 143,485.17 and 312,805.55 is: 681,933.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,485.17 : 312,805.55 = 312,805.55 : x
  2. Step 2: Convert to fraction form
    143,485.17/312,805.55 = 312,805.55/x
  3. Step 3: Cross multiply
    143,485.17x = 312,805.55 × 312,805.55
  4. Step 4: Simplify right side
    143,485.17x = 97,847,310,155.77
  5. Step 5: Solve for x
    x = 97,847,310,155.77/143,485.17
  6. Step 6: Final answer
    x = 681,933.25

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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.