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Finding the Third Proportional to 177,438 and 389,226

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Solution

The third proportional to 177,438 and 389,226 is: 853,801.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,438 : 389,226 = 389,226 : x
  2. Step 2: Convert to fraction form
    177,438/389,226 = 389,226/x
  3. Step 3: Cross multiply
    177,438x = 389,226 × 389,226
  4. Step 4: Simplify right side
    177,438x = 151,496,879,076
  5. Step 5: Solve for x
    x = 151,496,879,076/177,438
  6. Step 6: Final answer
    x = 853,801.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.