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Finding the Third Proportional to 119,968 and 258,368

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Solution

The third proportional to 119,968 and 258,368 is: 556,431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,968 : 258,368 = 258,368 : x
  2. Step 2: Convert to fraction form
    119,968/258,368 = 258,368/x
  3. Step 3: Cross multiply
    119,968x = 258,368 × 258,368
  4. Step 4: Simplify right side
    119,968x = 66,754,023,424
  5. Step 5: Solve for x
    x = 66,754,023,424/119,968
  6. Step 6: Final answer
    x = 556,431.91

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.