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Finding the Fourth Proportional to 303,704.64, 418,970.40 and 196,308.80

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Solution

The fourth proportional to 303,704.64, 418,970.40 and 196,308.80 is: 270,814.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,704.64 : 418,970.40 = 196,308.80 : x
  2. Step 2: Convert to fraction form
    303,704.64/418,970.40 = 196,308.80/x
  3. Step 3: Cross multiply
    303,704.64x = 418,970.40 × 196,308.80
  4. Step 4: Simplify right side
    303,704.64x = 82,247,576,459.52
  5. Step 5: Solve for x
    x = 82,247,576,459.52/303,704.64
  6. Step 6: Final answer
    x = 270,814.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.