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Finding the Third Proportional to 121,600 and 299,888

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Solution

The third proportional to 121,600 and 299,888 is: 739,579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,600 : 299,888 = 299,888 : x
  2. Step 2: Convert to fraction form
    121,600/299,888 = 299,888/x
  3. Step 3: Cross multiply
    121,600x = 299,888 × 299,888
  4. Step 4: Simplify right side
    121,600x = 89,932,812,544
  5. Step 5: Solve for x
    x = 89,932,812,544/121,600
  6. Step 6: Final answer
    x = 739,579.05

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.