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Finding the Third Proportional to 121,410 and 248,831

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Solution

The third proportional to 121,410 and 248,831 is: 509,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,410 : 248,831 = 248,831 : x
  2. Step 2: Convert to fraction form
    121,410/248,831 = 248,831/x
  3. Step 3: Cross multiply
    121,410x = 248,831 × 248,831
  4. Step 4: Simplify right side
    121,410x = 61,916,866,561
  5. Step 5: Solve for x
    x = 61,916,866,561/121,410
  6. Step 6: Final answer
    x = 509,981.60

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.