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Finding the Third Proportional to 138,710,906 and 216,008,573

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Solution

The third proportional to 138,710,906 and 216,008,573 is: 336,380,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,710,906 : 216,008,573 = 216,008,573 : x
  2. Step 2: Convert to fraction form
    138,710,906/216,008,573 = 216,008,573/x
  3. Step 3: Cross multiply
    138,710,906x = 216,008,573 × 216,008,573
  4. Step 4: Simplify right side
    138,710,906x = 46,659,703,609,496,328
  5. Step 5: Solve for x
    x = 46,659,703,609,496,328/138,710,906
  6. Step 6: Final answer
    x = 336,380,930.35

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.