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Finding the Third Proportional to 117,156 and 255,520

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Solution

The third proportional to 117,156 and 255,520 is: 557,295.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,156 : 255,520 = 255,520 : x
  2. Step 2: Convert to fraction form
    117,156/255,520 = 255,520/x
  3. Step 3: Cross multiply
    117,156x = 255,520 × 255,520
  4. Step 4: Simplify right side
    117,156x = 65,290,470,400
  5. Step 5: Solve for x
    x = 65,290,470,400/117,156
  6. Step 6: Final answer
    x = 557,295.15

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.