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Finding the Third Proportional to 142,386 and 313,194

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Solution

The third proportional to 142,386 and 313,194 is: 688,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,386 : 313,194 = 313,194 : x
  2. Step 2: Convert to fraction form
    142,386/313,194 = 313,194/x
  3. Step 3: Cross multiply
    142,386x = 313,194 × 313,194
  4. Step 4: Simplify right side
    142,386x = 98,090,481,636
  5. Step 5: Solve for x
    x = 98,090,481,636/142,386
  6. Step 6: Final answer
    x = 688,905.38

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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.