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Finding the Fourth Proportional to 218,860.40, 329,165.40 and 196,115.60

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Solution

The fourth proportional to 218,860.40, 329,165.40 and 196,115.60 is: 294,957.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,860.40 : 329,165.40 = 196,115.60 : x
  2. Step 2: Convert to fraction form
    218,860.40/329,165.40 = 196,115.60/x
  3. Step 3: Cross multiply
    218,860.40x = 329,165.40 × 196,115.60
  4. Step 4: Simplify right side
    218,860.40x = 64,554,469,920.24
  5. Step 5: Solve for x
    x = 64,554,469,920.24/218,860.40
  6. Step 6: Final answer
    x = 294,957.29

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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.