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Finding the Fourth Proportional to 303,893.37, 455,865.94 and 90,647.54

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Solution

The fourth proportional to 303,893.37, 455,865.94 and 90,647.54 is: 135,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,893.37 : 455,865.94 = 90,647.54 : x
  2. Step 2: Convert to fraction form
    303,893.37/455,865.94 = 90,647.54/x
  3. Step 3: Cross multiply
    303,893.37x = 455,865.94 × 90,647.54
  4. Step 4: Simplify right side
    303,893.37x = 41,323,125,574.26
  5. Step 5: Solve for x
    x = 41,323,125,574.26/303,893.37
  6. Step 6: Final answer
    x = 135,979.03

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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.