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Finding the Third Proportional to 310,888.13 and 645,144.75

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Solution

The third proportional to 310,888.13 and 645,144.75 is: 1,338,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,888.13 : 645,144.75 = 645,144.75 : x
  2. Step 2: Convert to fraction form
    310,888.13/645,144.75 = 645,144.75/x
  3. Step 3: Cross multiply
    310,888.13x = 645,144.75 × 645,144.75
  4. Step 4: Simplify right side
    310,888.13x = 416,211,748,452.56
  5. Step 5: Solve for x
    x = 416,211,748,452.56/310,888.13
  6. Step 6: Final answer
    x = 1,338,783.04

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.