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Finding the Fourth Proportional to 303,908.60, 455,206.80 and 197,620.40

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Solution

The fourth proportional to 303,908.60, 455,206.80 and 197,620.40 is: 296,003.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,908.60 : 455,206.80 = 197,620.40 : x
  2. Step 2: Convert to fraction form
    303,908.60/455,206.80 = 197,620.40/x
  3. Step 3: Cross multiply
    303,908.60x = 455,206.80 × 197,620.40
  4. Step 4: Simplify right side
    303,908.60x = 89,958,149,898.72
  5. Step 5: Solve for x
    x = 89,958,149,898.72/303,908.60
  6. Step 6: Final answer
    x = 296,003.96

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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.