Finding the Fourth Proportional to 206,939.24, 285,303.78 and 135,194.60
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Solution
The fourth proportional to 206,939.24, 285,303.78 and 135,194.60 is: 186,390.61
Step by Step Solution
- Step 1: Write the proportion equation
206,939.24 : 285,303.78 = 135,194.60 : x - Step 2: Convert to fraction form
206,939.24/285,303.78 = 135,194.60/x - Step 3: Cross multiply
206,939.24x = 285,303.78 × 135,194.60 - Step 4: Simplify right side
206,939.24x = 38,571,530,415.59 - Step 5: Solve for x
x = 38,571,530,415.59/206,939.24 - Step 6: Final answer
x = 186,390.61
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.