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Finding the Third Proportional to 127,335 and 279,942

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Solution

The third proportional to 127,335 and 279,942 is: 615,443.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,335 : 279,942 = 279,942 : x
  2. Step 2: Convert to fraction form
    127,335/279,942 = 279,942/x
  3. Step 3: Cross multiply
    127,335x = 279,942 × 279,942
  4. Step 4: Simplify right side
    127,335x = 78,367,523,364
  5. Step 5: Solve for x
    x = 78,367,523,364/127,335
  6. Step 6: Final answer
    x = 615,443.70

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.