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Finding the Third Proportional to 87,489,942 and 191,457,228

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Solution

The third proportional to 87,489,942 and 191,457,228 is: 418,972,390.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489,942 : 191,457,228 = 191,457,228 : x
  2. Step 2: Convert to fraction form
    87,489,942/191,457,228 = 191,457,228/x
  3. Step 3: Cross multiply
    87,489,942x = 191,457,228 × 191,457,228
  4. Step 4: Simplify right side
    87,489,942x = 36,655,870,153,443,984
  5. Step 5: Solve for x
    x = 36,655,870,153,443,984/87,489,942
  6. Step 6: Final answer
    x = 418,972,390.60

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.