Finding the Fourth Proportional to 285,079.94, 427,611.09 and 135,427.94
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Solution
The fourth proportional to 285,079.94, 427,611.09 and 135,427.94 is: 203,137.72
Step by Step Solution
- Step 1: Write the proportion equation
285,079.94 : 427,611.09 = 135,427.94 : x - Step 2: Convert to fraction form
285,079.94/427,611.09 = 135,427.94/x - Step 3: Cross multiply
285,079.94x = 427,611.09 × 135,427.94 - Step 4: Simplify right side
285,079.94x = 57,910,489,039.85 - Step 5: Solve for x
x = 57,910,489,039.85/285,079.94 - Step 6: Final answer
x = 203,137.72
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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.