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Finding the Fourth Proportional to 218,847.53, 328,242.09 and 61,091.93

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Solution

The fourth proportional to 218,847.53, 328,242.09 and 61,091.93 is: 91,629.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,847.53 : 328,242.09 = 61,091.93 : x
  2. Step 2: Convert to fraction form
    218,847.53/328,242.09 = 61,091.93/x
  3. Step 3: Cross multiply
    218,847.53x = 328,242.09 × 61,091.93
  4. Step 4: Simplify right side
    218,847.53x = 20,052,942,785.33
  5. Step 5: Solve for x
    x = 20,052,942,785.33/218,847.53
  6. Step 6: Final answer
    x = 91,629.74

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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.