Finding the Fourth Proportional to 396,709.67, 547,457.36 and 215,419.98
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Solution
The fourth proportional to 396,709.67, 547,457.36 and 215,419.98 is: 297,278.50
Step by Step Solution
- Step 1: Write the proportion equation
396,709.67 : 547,457.36 = 215,419.98 : x - Step 2: Convert to fraction form
396,709.67/547,457.36 = 215,419.98/x - Step 3: Cross multiply
396,709.67x = 547,457.36 × 215,419.98 - Step 4: Simplify right side
396,709.67x = 117,933,252,464.95 - Step 5: Solve for x
x = 117,933,252,464.95/396,709.67 - Step 6: Final answer
x = 297,278.50
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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.