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Finding the Fourth Proportional to 218,069.09, 326,969.69 and 84,794.00

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Solution

The fourth proportional to 218,069.09, 326,969.69 and 84,794.00 is: 127,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,069.09 : 326,969.69 = 84,794.00 : x
  2. Step 2: Convert to fraction form
    218,069.09/326,969.69 = 84,794.00/x
  3. Step 3: Cross multiply
    218,069.09x = 326,969.69 × 84,794.00
  4. Step 4: Simplify right side
    218,069.09x = 27,725,065,835.04
  5. Step 5: Solve for x
    x = 27,725,065,835.04/218,069.09
  6. Step 6: Final answer
    x = 127,138.91

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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.