Finding the Fourth Proportional to 396,493.94, 547,146.97 and 215,201.99
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Solution
The fourth proportional to 396,493.94, 547,146.97 and 215,201.99 is: 296,970.78
Step by Step Solution
- Step 1: Write the proportion equation
396,493.94 : 547,146.97 = 215,201.99 : x - Step 2: Convert to fraction form
396,493.94/547,146.97 = 215,201.99/x - Step 3: Cross multiply
396,493.94x = 547,146.97 × 215,201.99 - Step 4: Simplify right side
396,493.94x = 117,747,113,492.73 - Step 5: Solve for x
x = 117,747,113,492.73/396,493.94 - Step 6: Final answer
x = 296,970.78
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.