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Finding the Third Proportional to 188,186,220 and 391,837,509

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Solution

The third proportional to 188,186,220 and 391,837,509 is: 815,876,069.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,186,220 : 391,837,509 = 391,837,509 : x
  2. Step 2: Convert to fraction form
    188,186,220/391,837,509 = 391,837,509/x
  3. Step 3: Cross multiply
    188,186,220x = 391,837,509 × 391,837,509
  4. Step 4: Simplify right side
    188,186,220x = 153,536,633,459,325,088
  5. Step 5: Solve for x
    x = 153,536,633,459,325,088/188,186,220
  6. Step 6: Final answer
    x = 815,876,069.24

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.