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Finding the Fourth Proportional to 218,067.70, 326,858.55 and 84,903.70

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Solution

The fourth proportional to 218,067.70, 326,858.55 and 84,903.70 is: 127,260.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,067.70 : 326,858.55 = 84,903.70 : x
  2. Step 2: Convert to fraction form
    218,067.70/326,858.55 = 84,903.70/x
  3. Step 3: Cross multiply
    218,067.70x = 326,858.55 × 84,903.70
  4. Step 4: Simplify right side
    218,067.70x = 27,751,500,271.64
  5. Step 5: Solve for x
    x = 27,751,500,271.64/218,067.70
  6. Step 6: Final answer
    x = 127,260.94

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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.