Finding the Fourth Proportional to 285,083.94, 427,617.09 and 135,431.94
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Solution
The fourth proportional to 285,083.94, 427,617.09 and 135,431.94 is: 203,143.72
Step by Step Solution
- Step 1: Write the proportion equation
285,083.94 : 427,617.09 = 135,431.94 : x - Step 2: Convert to fraction form
285,083.94/427,617.09 = 135,431.94/x - Step 3: Cross multiply
285,083.94x = 427,617.09 × 135,431.94 - Step 4: Simplify right side
285,083.94x = 57,913,012,075.85 - Step 5: Solve for x
x = 57,913,012,075.85/285,083.94 - Step 6: Final answer
x = 203,143.72
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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.