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Finding the Third Proportional to 240,342 and 556,377

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Solution

The third proportional to 240,342 and 556,377 is: 1,287,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,342 : 556,377 = 556,377 : x
  2. Step 2: Convert to fraction form
    240,342/556,377 = 556,377/x
  3. Step 3: Cross multiply
    240,342x = 556,377 × 556,377
  4. Step 4: Simplify right side
    240,342x = 309,555,366,129
  5. Step 5: Solve for x
    x = 309,555,366,129/240,342
  6. Step 6: Final answer
    x = 1,287,978.66

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.