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Finding the Fourth Proportional to 247,081.97, 340,970.66 and 138,185.10

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Solution

The fourth proportional to 247,081.97, 340,970.66 and 138,185.10 is: 190,694.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,081.97 : 340,970.66 = 138,185.10 : x
  2. Step 2: Convert to fraction form
    247,081.97/340,970.66 = 138,185.10/x
  3. Step 3: Cross multiply
    247,081.97x = 340,970.66 × 138,185.10
  4. Step 4: Simplify right side
    247,081.97x = 47,117,064,058.24
  5. Step 5: Solve for x
    x = 47,117,064,058.24/247,081.97
  6. Step 6: Final answer
    x = 190,694.06

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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.