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Finding the Third Proportional to 56,209 and 124,321

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Solution

The third proportional to 56,209 and 124,321 is: 274,968.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,209 : 124,321 = 124,321 : x
  2. Step 2: Convert to fraction form
    56,209/124,321 = 124,321/x
  3. Step 3: Cross multiply
    56,209x = 124,321 × 124,321
  4. Step 4: Simplify right side
    56,209x = 15,455,711,041
  5. Step 5: Solve for x
    x = 15,455,711,041/56,209
  6. Step 6: Final answer
    x = 274,968.62

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.