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Finding the Third Proportional to 358,790 and 555,195

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Solution

The third proportional to 358,790 and 555,195 is: 859,113.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,790 : 555,195 = 555,195 : x
  2. Step 2: Convert to fraction form
    358,790/555,195 = 555,195/x
  3. Step 3: Cross multiply
    358,790x = 555,195 × 555,195
  4. Step 4: Simplify right side
    358,790x = 308,241,488,025
  5. Step 5: Solve for x
    x = 308,241,488,025/358,790
  6. Step 6: Final answer
    x = 859,113.93

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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.