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Finding the Third Proportional to 143,553,218 and 222,711,218

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Solution

The third proportional to 143,553,218 and 222,711,218 is: 345,518,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,553,218 : 222,711,218 = 222,711,218 : x
  2. Step 2: Convert to fraction form
    143,553,218/222,711,218 = 222,711,218/x
  3. Step 3: Cross multiply
    143,553,218x = 222,711,218 × 222,711,218
  4. Step 4: Simplify right side
    143,553,218x = 49,600,286,623,043,520
  5. Step 5: Solve for x
    x = 49,600,286,623,043,520/143,553,218
  6. Step 6: Final answer
    x = 345,518,458.69

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.