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Finding the Third Proportional to 129,520,325 and 211,472,644.50

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Solution

The third proportional to 129,520,325 and 211,472,644.50 is: 345,279,239.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,520,325 : 211,472,644.50 = 211,472,644.50 : x
  2. Step 2: Convert to fraction form
    129,520,325/211,472,644.50 = 211,472,644.50/x
  3. Step 3: Cross multiply
    129,520,325x = 211,472,644.50 × 211,472,644.50
  4. Step 4: Simplify right side
    129,520,325x = 44,720,679,371,823,384
  5. Step 5: Solve for x
    x = 44,720,679,371,823,384/129,520,325
  6. Step 6: Final answer
    x = 345,279,239.93

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.