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Finding the Third Proportional to 196,776 and 276,120

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Solution

The third proportional to 196,776 and 276,120 is: 387,457.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,776 : 276,120 = 276,120 : x
  2. Step 2: Convert to fraction form
    196,776/276,120 = 276,120/x
  3. Step 3: Cross multiply
    196,776x = 276,120 × 276,120
  4. Step 4: Simplify right side
    196,776x = 76,242,254,400
  5. Step 5: Solve for x
    x = 76,242,254,400/196,776
  6. Step 6: Final answer
    x = 387,457.08

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.