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Finding the Third Proportional to 90,611,808 and 197,146,560

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Solution

The third proportional to 90,611,808 and 197,146,560 is: 428,937,099.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,611,808 : 197,146,560 = 197,146,560 : x
  2. Step 2: Convert to fraction form
    90,611,808/197,146,560 = 197,146,560/x
  3. Step 3: Cross multiply
    90,611,808x = 197,146,560 × 197,146,560
  4. Step 4: Simplify right side
    90,611,808x = 38,866,766,119,833,600
  5. Step 5: Solve for x
    x = 38,866,766,119,833,600/90,611,808
  6. Step 6: Final answer
    x = 428,937,099.68

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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.