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Finding the Third Proportional to 90,784,728 and 188,029,239

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Solution

The third proportional to 90,784,728 and 188,029,239 is: 389,437,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,784,728 : 188,029,239 = 188,029,239 : x
  2. Step 2: Convert to fraction form
    90,784,728/188,029,239 = 188,029,239/x
  3. Step 3: Cross multiply
    90,784,728x = 188,029,239 × 188,029,239
  4. Step 4: Simplify right side
    90,784,728x = 35,354,994,718,919,120
  5. Step 5: Solve for x
    x = 35,354,994,718,919,120/90,784,728
  6. Step 6: Final answer
    x = 389,437,689.55

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.