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Finding the Third Proportional to 153,243 and 324,915

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Solution

The third proportional to 153,243 and 324,915 is: 688,904.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,243 : 324,915 = 324,915 : x
  2. Step 2: Convert to fraction form
    153,243/324,915 = 324,915/x
  3. Step 3: Cross multiply
    153,243x = 324,915 × 324,915
  4. Step 4: Simplify right side
    153,243x = 105,569,757,225
  5. Step 5: Solve for x
    x = 105,569,757,225/153,243
  6. Step 6: Final answer
    x = 688,904.27

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.