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Finding the Third Proportional to 188,130 and 405,650

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Solution

The third proportional to 188,130 and 405,650 is: 874,671.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,130 : 405,650 = 405,650 : x
  2. Step 2: Convert to fraction form
    188,130/405,650 = 405,650/x
  3. Step 3: Cross multiply
    188,130x = 405,650 × 405,650
  4. Step 4: Simplify right side
    188,130x = 164,551,922,500
  5. Step 5: Solve for x
    x = 164,551,922,500/188,130
  6. Step 6: Final answer
    x = 874,671.36

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.