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Finding the Third Proportional to 270,247.50 and 420,680.25

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Solution

The third proportional to 270,247.50 and 420,680.25 is: 654,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,247.50 : 420,680.25 = 420,680.25 : x
  2. Step 2: Convert to fraction form
    270,247.50/420,680.25 = 420,680.25/x
  3. Step 3: Cross multiply
    270,247.50x = 420,680.25 × 420,680.25
  4. Step 4: Simplify right side
    270,247.50x = 176,971,872,740.06
  5. Step 5: Solve for x
    x = 176,971,872,740.06/270,247.50
  6. Step 6: Final answer
    x = 654,851.10

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.