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Finding the Fourth Proportional to 218,768.94, 328,201.56 and 66,967.22

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Solution

The fourth proportional to 218,768.94, 328,201.56 and 66,967.22 is: 100,465.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,768.94 : 328,201.56 = 66,967.22 : x
  2. Step 2: Convert to fraction form
    218,768.94/328,201.56 = 66,967.22/x
  3. Step 3: Cross multiply
    218,768.94x = 328,201.56 × 66,967.22
  4. Step 4: Simplify right side
    218,768.94x = 21,978,746,893.37
  5. Step 5: Solve for x
    x = 21,978,746,893.37/218,768.94
  6. Step 6: Final answer
    x = 100,465.57

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1.5x scale

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.