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Finding the Third Proportional to 70,642.50 and 153,435

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Solution

The third proportional to 70,642.50 and 153,435 is: 333,259.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,642.50 : 153,435 = 153,435 : x
  2. Step 2: Convert to fraction form
    70,642.50/153,435 = 153,435/x
  3. Step 3: Cross multiply
    70,642.50x = 153,435 × 153,435
  4. Step 4: Simplify right side
    70,642.50x = 23,542,299,225
  5. Step 5: Solve for x
    x = 23,542,299,225/70,642.50
  6. Step 6: Final answer
    x = 333,259.71

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.