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Finding the Fourth Proportional to 279,716.01, 386,058.06 and 164,987.61

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Solution

The fourth proportional to 279,716.01, 386,058.06 and 164,987.61 is: 227,712.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,716.01 : 386,058.06 = 164,987.61 : x
  2. Step 2: Convert to fraction form
    279,716.01/386,058.06 = 164,987.61/x
  3. Step 3: Cross multiply
    279,716.01x = 386,058.06 × 164,987.61
  4. Step 4: Simplify right side
    279,716.01x = 63,694,796,640.64
  5. Step 5: Solve for x
    x = 63,694,796,640.64/279,716.01
  6. Step 6: Final answer
    x = 227,712.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.