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Finding the Third Proportional to 279,372.38 and 428,064.75

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Solution

The third proportional to 279,372.38 and 428,064.75 is: 655,896.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,372.38 : 428,064.75 = 428,064.75 : x
  2. Step 2: Convert to fraction form
    279,372.38/428,064.75 = 428,064.75/x
  3. Step 3: Cross multiply
    279,372.38x = 428,064.75 × 428,064.75
  4. Step 4: Simplify right side
    279,372.38x = 183,239,430,192.56
  5. Step 5: Solve for x
    x = 183,239,430,192.56/279,372.38
  6. Step 6: Final answer
    x = 655,896.74

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.