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Finding the Third Proportional to 358,788 and 555,192

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Solution

The third proportional to 358,788 and 555,192 is: 859,109.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,788 : 555,192 = 555,192 : x
  2. Step 2: Convert to fraction form
    358,788/555,192 = 555,192/x
  3. Step 3: Cross multiply
    358,788x = 555,192 × 555,192
  4. Step 4: Simplify right side
    358,788x = 308,238,156,864
  5. Step 5: Solve for x
    x = 308,238,156,864/358,788
  6. Step 6: Final answer
    x = 859,109.44

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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.