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Finding the Fourth Proportional to 199,322.40, 298,983.60 and 136,336.80

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Solution

The fourth proportional to 199,322.40, 298,983.60 and 136,336.80 is: 204,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,322.40 : 298,983.60 = 136,336.80 : x
  2. Step 2: Convert to fraction form
    199,322.40/298,983.60 = 136,336.80/x
  3. Step 3: Cross multiply
    199,322.40x = 298,983.60 × 136,336.80
  4. Step 4: Simplify right side
    199,322.40x = 40,762,467,276.48
  5. Step 5: Solve for x
    x = 40,762,467,276.48/199,322.40
  6. Step 6: Final answer
    x = 204,505.20

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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.