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Finding the Third Proportional to 368,011 and 555,515

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Solution

The third proportional to 368,011 and 555,515 is: 838,553.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,011 : 555,515 = 555,515 : x
  2. Step 2: Convert to fraction form
    368,011/555,515 = 555,515/x
  3. Step 3: Cross multiply
    368,011x = 555,515 × 555,515
  4. Step 4: Simplify right side
    368,011x = 308,596,915,225
  5. Step 5: Solve for x
    x = 308,596,915,225/368,011
  6. Step 6: Final answer
    x = 838,553.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.