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Finding the Third Proportional to 138,231,280 and 296,976,480

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Solution

The third proportional to 138,231,280 and 296,976,480 is: 638,025,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,231,280 : 296,976,480 = 296,976,480 : x
  2. Step 2: Convert to fraction form
    138,231,280/296,976,480 = 296,976,480/x
  3. Step 3: Cross multiply
    138,231,280x = 296,976,480 × 296,976,480
  4. Step 4: Simplify right side
    138,231,280x = 88,195,029,673,190,400
  5. Step 5: Solve for x
    x = 88,195,029,673,190,400/138,231,280
  6. Step 6: Final answer
    x = 638,025,124.80

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.