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Finding the Third Proportional to 208,028 and 313,509

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Solution

The third proportional to 208,028 and 313,509 is: 472,474.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,028 : 313,509 = 313,509 : x
  2. Step 2: Convert to fraction form
    208,028/313,509 = 313,509/x
  3. Step 3: Cross multiply
    208,028x = 313,509 × 313,509
  4. Step 4: Simplify right side
    208,028x = 98,287,893,081
  5. Step 5: Solve for x
    x = 98,287,893,081/208,028
  6. Step 6: Final answer
    x = 472,474.35

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.