Finding the Fourth Proportional to 285,455.12, 428,192.40 and 135,618.08
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Solution
The fourth proportional to 285,455.12, 428,192.40 and 135,618.08 is: 203,431.74
Step by Step Solution
- Step 1: Write the proportion equation
285,455.12 : 428,192.40 = 135,618.08 : x - Step 2: Convert to fraction form
285,455.12/428,192.40 = 135,618.08/x - Step 3: Cross multiply
285,455.12x = 428,192.40 × 135,618.08 - Step 4: Simplify right side
285,455.12x = 58,070,631,158.59 - Step 5: Solve for x
x = 58,070,631,158.59/285,455.12 - Step 6: Final answer
x = 203,431.74
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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.