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Finding the Third Proportional to 131,391 and 272,115

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Solution

The third proportional to 131,391 and 272,115 is: 563,558.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,391 : 272,115 = 272,115 : x
  2. Step 2: Convert to fraction form
    131,391/272,115 = 272,115/x
  3. Step 3: Cross multiply
    131,391x = 272,115 × 272,115
  4. Step 4: Simplify right side
    131,391x = 74,046,573,225
  5. Step 5: Solve for x
    x = 74,046,573,225/131,391
  6. Step 6: Final answer
    x = 563,558.94

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.