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Finding the Fourth Proportional to 204,994.32, 307,504.44 and 86,650.08

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Solution

The fourth proportional to 204,994.32, 307,504.44 and 86,650.08 is: 129,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,994.32 : 307,504.44 = 86,650.08 : x
  2. Step 2: Convert to fraction form
    204,994.32/307,504.44 = 86,650.08/x
  3. Step 3: Cross multiply
    204,994.32x = 307,504.44 × 86,650.08
  4. Step 4: Simplify right side
    204,994.32x = 26,645,284,326.36
  5. Step 5: Solve for x
    x = 26,645,284,326.36/204,994.32
  6. Step 6: Final answer
    x = 129,980.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.