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Finding the Third Proportional to 117,308 and 255,786

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Solution

The third proportional to 117,308 and 255,786 is: 557,732.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,308 : 255,786 = 255,786 : x
  2. Step 2: Convert to fraction form
    117,308/255,786 = 255,786/x
  3. Step 3: Cross multiply
    117,308x = 255,786 × 255,786
  4. Step 4: Simplify right side
    117,308x = 65,426,477,796
  5. Step 5: Solve for x
    x = 65,426,477,796/117,308
  6. Step 6: Final answer
    x = 557,732.45

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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.