Finding the Fourth Proportional to 285,245.73, 427,842.99 and 85,610.70
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Solution
The fourth proportional to 285,245.73, 427,842.99 and 85,610.70 is: 128,408.37
Step by Step Solution
- Step 1: Write the proportion equation
285,245.73 : 427,842.99 = 85,610.70 : x - Step 2: Convert to fraction form
285,245.73/427,842.99 = 85,610.70/x - Step 3: Cross multiply
285,245.73x = 427,842.99 × 85,610.70 - Step 4: Simplify right side
285,245.73x = 36,627,937,863.99 - Step 5: Solve for x
x = 36,627,937,863.99/285,245.73 - Step 6: Final answer
x = 128,408.37
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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.