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Finding the Third Proportional to 86,432,208 and 187,213,728

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Solution

The third proportional to 86,432,208 and 187,213,728 is: 405,508,325.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,432,208 : 187,213,728 = 187,213,728 : x
  2. Step 2: Convert to fraction form
    86,432,208/187,213,728 = 187,213,728/x
  3. Step 3: Cross multiply
    86,432,208x = 187,213,728 × 187,213,728
  4. Step 4: Simplify right side
    86,432,208x = 35,048,979,951,657,984
  5. Step 5: Solve for x
    x = 35,048,979,951,657,984/86,432,208
  6. Step 6: Final answer
    x = 405,508,325.69

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.