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Finding the Third Proportional to 343,955 and 515,108.50

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Solution

The third proportional to 343,955 and 515,108.50 is: 771,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,955 : 515,108.50 = 515,108.50 : x
  2. Step 2: Convert to fraction form
    343,955/515,108.50 = 515,108.50/x
  3. Step 3: Cross multiply
    343,955x = 515,108.50 × 515,108.50
  4. Step 4: Simplify right side
    343,955x = 265,336,766,772.25
  5. Step 5: Solve for x
    x = 265,336,766,772.25/343,955
  6. Step 6: Final answer
    x = 771,428.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.