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Finding the Third Proportional to 147,212 and 319,318

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Solution

The third proportional to 147,212 and 319,318 is: 692,633.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,212 : 319,318 = 319,318 : x
  2. Step 2: Convert to fraction form
    147,212/319,318 = 319,318/x
  3. Step 3: Cross multiply
    147,212x = 319,318 × 319,318
  4. Step 4: Simplify right side
    147,212x = 101,963,985,124
  5. Step 5: Solve for x
    x = 101,963,985,124/147,212
  6. Step 6: Final answer
    x = 692,633.65

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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.