Finding the Fourth Proportional to 215,737.48, 297,578.74 and 143,138.80
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Solution
The fourth proportional to 215,737.48, 297,578.74 and 143,138.80 is: 197,439.33
Step by Step Solution
- Step 1: Write the proportion equation
215,737.48 : 297,578.74 = 143,138.80 : x - Step 2: Convert to fraction form
215,737.48/297,578.74 = 143,138.80/x - Step 3: Cross multiply
215,737.48x = 297,578.74 × 143,138.80 - Step 4: Simplify right side
215,737.48x = 42,595,063,749.11 - Step 5: Solve for x
x = 42,595,063,749.11/215,737.48 - Step 6: Final answer
x = 197,439.33
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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.