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Finding the Fourth Proportional to 303,288.60, 455,027.30 and 90,057.63

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Solution

The fourth proportional to 303,288.60, 455,027.30 and 90,057.63 is: 135,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,288.60 : 455,027.30 = 90,057.63 : x
  2. Step 2: Convert to fraction form
    303,288.60/455,027.30 = 90,057.63/x
  3. Step 3: Cross multiply
    303,288.60x = 455,027.30 × 90,057.63
  4. Step 4: Simplify right side
    303,288.60x = 40,978,682,323.65
  5. Step 5: Solve for x
    x = 40,978,682,323.65/303,288.60
  6. Step 6: Final answer
    x = 135,114.48

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1.5x scale

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.