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Finding the Third Proportional to 273,427.50 and 428,061.75

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Solution

The third proportional to 273,427.50 and 428,061.75 is: 670,147.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,427.50 : 428,061.75 = 428,061.75 : x
  2. Step 2: Convert to fraction form
    273,427.50/428,061.75 = 428,061.75/x
  3. Step 3: Cross multiply
    273,427.50x = 428,061.75 × 428,061.75
  4. Step 4: Simplify right side
    273,427.50x = 183,236,861,813.06
  5. Step 5: Solve for x
    x = 183,236,861,813.06/273,427.50
  6. Step 6: Final answer
    x = 670,147.89

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.