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Finding the Third Proportional to 147,215 and 319,324

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Solution

The third proportional to 147,215 and 319,324 is: 692,645.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,215 : 319,324 = 319,324 : x
  2. Step 2: Convert to fraction form
    147,215/319,324 = 319,324/x
  3. Step 3: Cross multiply
    147,215x = 319,324 × 319,324
  4. Step 4: Simplify right side
    147,215x = 101,967,816,976
  5. Step 5: Solve for x
    x = 101,967,816,976/147,215
  6. Step 6: Final answer
    x = 692,645.57

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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.