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Finding the Third Proportional to 128,914 and 277,575

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Solution

The third proportional to 128,914 and 277,575 is: 597,668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,914 : 277,575 = 277,575 : x
  2. Step 2: Convert to fraction form
    128,914/277,575 = 277,575/x
  3. Step 3: Cross multiply
    128,914x = 277,575 × 277,575
  4. Step 4: Simplify right side
    128,914x = 77,047,880,625
  5. Step 5: Solve for x
    x = 77,047,880,625/128,914
  6. Step 6: Final answer
    x = 597,668.84

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.