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Finding the Third Proportional to 239,945 and 555,486

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Solution

The third proportional to 239,945 and 555,486 is: 1,285,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,945 : 555,486 = 555,486 : x
  2. Step 2: Convert to fraction form
    239,945/555,486 = 555,486/x
  3. Step 3: Cross multiply
    239,945x = 555,486 × 555,486
  4. Step 4: Simplify right side
    239,945x = 308,564,696,196
  5. Step 5: Solve for x
    x = 308,564,696,196/239,945
  6. Step 6: Final answer
    x = 1,285,980.94

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.