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Finding the Third Proportional to 201,808,828 and 315,885,934

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Solution

The third proportional to 201,808,828 and 315,885,934 is: 494,447,761.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,808,828 : 315,885,934 = 315,885,934 : x
  2. Step 2: Convert to fraction form
    201,808,828/315,885,934 = 315,885,934/x
  3. Step 3: Cross multiply
    201,808,828x = 315,885,934 × 315,885,934
  4. Step 4: Simplify right side
    201,808,828x = 99,783,923,299,052,352
  5. Step 5: Solve for x
    x = 99,783,923,299,052,352/201,808,828
  6. Step 6: Final answer
    x = 494,447,761.72

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.