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Finding the Third Proportional to 128,199,270 and 260,929,180

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Solution

The third proportional to 128,199,270 and 260,929,180 is: 531,079,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,199,270 : 260,929,180 = 260,929,180 : x
  2. Step 2: Convert to fraction form
    128,199,270/260,929,180 = 260,929,180/x
  3. Step 3: Cross multiply
    128,199,270x = 260,929,180 × 260,929,180
  4. Step 4: Simplify right side
    128,199,270x = 68,084,036,975,472,400
  5. Step 5: Solve for x
    x = 68,084,036,975,472,400/128,199,270
  6. Step 6: Final answer
    x = 531,079,755.57

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.