Finding the Fourth Proportional to 285,459.12, 428,198.40 and 135,622.08
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Solution
The fourth proportional to 285,459.12, 428,198.40 and 135,622.08 is: 203,437.74
Step by Step Solution
- Step 1: Write the proportion equation
285,459.12 : 428,198.40 = 135,622.08 : x - Step 2: Convert to fraction form
285,459.12/428,198.40 = 135,622.08/x - Step 3: Cross multiply
285,459.12x = 428,198.40 × 135,622.08 - Step 4: Simplify right side
285,459.12x = 58,073,157,660.67 - Step 5: Solve for x
x = 58,073,157,660.67/285,459.12 - Step 6: Final answer
x = 203,437.74
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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.