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Finding the Third Proportional to 129,446,536 and 278,103,392

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Solution

The third proportional to 129,446,536 and 278,103,392 is: 597,478,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,446,536 : 278,103,392 = 278,103,392 : x
  2. Step 2: Convert to fraction form
    129,446,536/278,103,392 = 278,103,392/x
  3. Step 3: Cross multiply
    129,446,536x = 278,103,392 × 278,103,392
  4. Step 4: Simplify right side
    129,446,536x = 77,341,496,641,905,664
  5. Step 5: Solve for x
    x = 77,341,496,641,905,664/129,446,536
  6. Step 6: Final answer
    x = 597,478,302.87

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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.