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Finding the Third Proportional to 263,889,792 and 357,990,419

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Solution

The third proportional to 263,889,792 and 357,990,419 is: 485,646,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,889,792 : 357,990,419 = 357,990,419 : x
  2. Step 2: Convert to fraction form
    263,889,792/357,990,419 = 357,990,419/x
  3. Step 3: Cross multiply
    263,889,792x = 357,990,419 × 357,990,419
  4. Step 4: Simplify right side
    263,889,792x = 128,157,140,095,795,568
  5. Step 5: Solve for x
    x = 128,157,140,095,795,568/263,889,792
  6. Step 6: Final answer
    x = 485,646,447.80

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.