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Finding the Third Proportional to 255,129 and 556,186

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Solution

The third proportional to 255,129 and 556,186 is: 1,212,495.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,129 : 556,186 = 556,186 : x
  2. Step 2: Convert to fraction form
    255,129/556,186 = 556,186/x
  3. Step 3: Cross multiply
    255,129x = 556,186 × 556,186
  4. Step 4: Simplify right side
    255,129x = 309,342,866,596
  5. Step 5: Solve for x
    x = 309,342,866,596/255,129
  6. Step 6: Final answer
    x = 1,212,495.90

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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.