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Finding the Fourth Proportional to 303,550.12, 455,245.81 and 90,260.59

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Solution

The fourth proportional to 303,550.12, 455,245.81 and 90,260.59 is: 135,367.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,550.12 : 455,245.81 = 90,260.59 : x
  2. Step 2: Convert to fraction form
    303,550.12/455,245.81 = 90,260.59/x
  3. Step 3: Cross multiply
    303,550.12x = 455,245.81 × 90,260.59
  4. Step 4: Simplify right side
    303,550.12x = 41,090,755,405.63
  5. Step 5: Solve for x
    x = 41,090,755,405.63/303,550.12
  6. Step 6: Final answer
    x = 135,367.28

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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.