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Finding the Fourth Proportional to 303,500.70, 455,769.45 and 198,783.90

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Solution

The fourth proportional to 303,500.70, 455,769.45 and 198,783.90 is: 298,515.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,500.70 : 455,769.45 = 198,783.90 : x
  2. Step 2: Convert to fraction form
    303,500.70/455,769.45 = 198,783.90/x
  3. Step 3: Cross multiply
    303,500.70x = 455,769.45 × 198,783.90
  4. Step 4: Simplify right side
    303,500.70x = 90,599,628,771.86
  5. Step 5: Solve for x
    x = 90,599,628,771.86/303,500.70
  6. Step 6: Final answer
    x = 298,515.39

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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.