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Finding the Third Proportional to 145,215 and 319,068

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Solution

The third proportional to 145,215 and 319,068 is: 701,059.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215 : 319,068 = 319,068 : x
  2. Step 2: Convert to fraction form
    145,215/319,068 = 319,068/x
  3. Step 3: Cross multiply
    145,215x = 319,068 × 319,068
  4. Step 4: Simplify right side
    145,215x = 101,804,388,624
  5. Step 5: Solve for x
    x = 101,804,388,624/145,215
  6. Step 6: Final answer
    x = 701,059.73

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.