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Finding the Third Proportional to 219,972,145 and 477,778,331

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Solution

The third proportional to 219,972,145 and 477,778,331 is: 1,037,731,998.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,972,145 : 477,778,331 = 477,778,331 : x
  2. Step 2: Convert to fraction form
    219,972,145/477,778,331 = 477,778,331/x
  3. Step 3: Cross multiply
    219,972,145x = 477,778,331 × 477,778,331
  4. Step 4: Simplify right side
    219,972,145x = 228,272,133,573,145,568
  5. Step 5: Solve for x
    x = 228,272,133,573,145,568/219,972,145
  6. Step 6: Final answer
    x = 1,037,731,998.17

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.