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Finding the Third Proportional to 277,280 and 429,160

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Solution

The third proportional to 277,280 and 429,160 is: 664,232.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,280 : 429,160 = 429,160 : x
  2. Step 2: Convert to fraction form
    277,280/429,160 = 429,160/x
  3. Step 3: Cross multiply
    277,280x = 429,160 × 429,160
  4. Step 4: Simplify right side
    277,280x = 184,178,305,600
  5. Step 5: Solve for x
    x = 184,178,305,600/277,280
  6. Step 6: Final answer
    x = 664,232.20

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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.