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Finding the Third Proportional to 66,430,611 and 144,949,318

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Solution

The third proportional to 66,430,611 and 144,949,318 is: 316,274,447.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,611 : 144,949,318 = 144,949,318 : x
  2. Step 2: Convert to fraction form
    66,430,611/144,949,318 = 144,949,318/x
  3. Step 3: Cross multiply
    66,430,611x = 144,949,318 × 144,949,318
  4. Step 4: Simplify right side
    66,430,611x = 21,010,304,788,665,124
  5. Step 5: Solve for x
    x = 21,010,304,788,665,124/66,430,611
  6. Step 6: Final answer
    x = 316,274,447.46

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.