Finding the Fourth Proportional to 228,702.75, 315,609.81 and 139,278.75
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Solution
The fourth proportional to 228,702.75, 315,609.81 and 139,278.75 is: 192,204.68
Step by Step Solution
- Step 1: Write the proportion equation
228,702.75 : 315,609.81 = 139,278.75 : x - Step 2: Convert to fraction form
228,702.75/315,609.81 = 139,278.75/x - Step 3: Cross multiply
228,702.75x = 315,609.81 × 139,278.75 - Step 4: Simplify right side
228,702.75x = 43,957,739,824.54 - Step 5: Solve for x
x = 43,957,739,824.54/228,702.75 - Step 6: Final answer
x = 192,204.68
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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.