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Finding the Fourth Proportional to 303,340.20, 455,010.30 and 208,861.80

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Solution

The fourth proportional to 303,340.20, 455,010.30 and 208,861.80 is: 313,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,340.20 : 455,010.30 = 208,861.80 : x
  2. Step 2: Convert to fraction form
    303,340.20/455,010.30 = 208,861.80/x
  3. Step 3: Cross multiply
    303,340.20x = 455,010.30 × 208,861.80
  4. Step 4: Simplify right side
    303,340.20x = 95,034,270,276.54
  5. Step 5: Solve for x
    x = 95,034,270,276.54/303,340.20
  6. Step 6: Final answer
    x = 313,292.70

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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.