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Finding the Third Proportional to 210,848 and 318,904

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Solution

The third proportional to 210,848 and 318,904 is: 482,336.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,848 : 318,904 = 318,904 : x
  2. Step 2: Convert to fraction form
    210,848/318,904 = 318,904/x
  3. Step 3: Cross multiply
    210,848x = 318,904 × 318,904
  4. Step 4: Simplify right side
    210,848x = 101,699,761,216
  5. Step 5: Solve for x
    x = 101,699,761,216/210,848
  6. Step 6: Final answer
    x = 482,336.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.