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Finding the Third Proportional to 277,272 and 429,156

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Solution

The third proportional to 277,272 and 429,156 is: 664,238.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,272 : 429,156 = 429,156 : x
  2. Step 2: Convert to fraction form
    277,272/429,156 = 429,156/x
  3. Step 3: Cross multiply
    277,272x = 429,156 × 429,156
  4. Step 4: Simplify right side
    277,272x = 184,174,872,336
  5. Step 5: Solve for x
    x = 184,174,872,336/277,272
  6. Step 6: Final answer
    x = 664,238.99

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.