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Finding the Third Proportional to 129,437,676 and 278,085,954

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Solution

The third proportional to 129,437,676 and 278,085,954 is: 597,444,269.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,437,676 : 278,085,954 = 278,085,954 : x
  2. Step 2: Convert to fraction form
    129,437,676/278,085,954 = 278,085,954/x
  3. Step 3: Cross multiply
    129,437,676x = 278,085,954 × 278,085,954
  4. Step 4: Simplify right side
    129,437,676x = 77,331,797,812,090,112
  5. Step 5: Solve for x
    x = 77,331,797,812,090,112/129,437,676
  6. Step 6: Final answer
    x = 597,444,269.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.