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Finding the Third Proportional to 201,808,830 and 315,885,937

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Solution

The third proportional to 201,808,830 and 315,885,937 is: 494,447,766.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,808,830 : 315,885,937 = 315,885,937 : x
  2. Step 2: Convert to fraction form
    201,808,830/315,885,937 = 315,885,937/x
  3. Step 3: Cross multiply
    201,808,830x = 315,885,937 × 315,885,937
  4. Step 4: Simplify right side
    201,808,830x = 99,783,925,194,367,968
  5. Step 5: Solve for x
    x = 99,783,925,194,367,968/201,808,830
  6. Step 6: Final answer
    x = 494,447,766.21

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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.