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Finding the Third Proportional to 191,265 and 420,276

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Solution

The third proportional to 191,265 and 420,276 is: 923,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,265 : 420,276 = 420,276 : x
  2. Step 2: Convert to fraction form
    191,265/420,276 = 420,276/x
  3. Step 3: Cross multiply
    191,265x = 420,276 × 420,276
  4. Step 4: Simplify right side
    191,265x = 176,631,916,176
  5. Step 5: Solve for x
    x = 176,631,916,176/191,265
  6. Step 6: Final answer
    x = 923,493.14

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.