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Finding the Fourth Proportional to 218,811.30, 328,216.95 and 201,704.10

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Solution

The fourth proportional to 218,811.30, 328,216.95 and 201,704.10 is: 302,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,811.30 : 328,216.95 = 201,704.10 : x
  2. Step 2: Convert to fraction form
    218,811.30/328,216.95 = 201,704.10/x
  3. Step 3: Cross multiply
    218,811.30x = 328,216.95 × 201,704.10
  4. Step 4: Simplify right side
    218,811.30x = 66,202,704,504.50
  5. Step 5: Solve for x
    x = 66,202,704,504.50/218,811.30
  6. Step 6: Final answer
    x = 302,556.15

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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.