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Finding the Fourth Proportional to 303,549.87, 455,245.44 and 90,260.34

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Solution

The fourth proportional to 303,549.87, 455,245.44 and 90,260.34 is: 135,366.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,549.87 : 455,245.44 = 90,260.34 : x
  2. Step 2: Convert to fraction form
    303,549.87/455,245.44 = 90,260.34/x
  3. Step 3: Cross multiply
    303,549.87x = 455,245.44 × 90,260.34
  4. Step 4: Simplify right side
    303,549.87x = 41,090,608,197.85
  5. Step 5: Solve for x
    x = 41,090,608,197.85/303,549.87
  6. Step 6: Final answer
    x = 135,366.91

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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.