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Finding the Third Proportional to 188,977,077 and 393,039,135

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Solution

The third proportional to 188,977,077 and 393,039,135 is: 817,452,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,977,077 : 393,039,135 = 393,039,135 : x
  2. Step 2: Convert to fraction form
    188,977,077/393,039,135 = 393,039,135/x
  3. Step 3: Cross multiply
    188,977,077x = 393,039,135 × 393,039,135
  4. Step 4: Simplify right side
    188,977,077x = 154,479,761,641,548,224
  5. Step 5: Solve for x
    x = 154,479,761,641,548,224/188,977,077
  6. Step 6: Final answer
    x = 817,452,381.49

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.