Finding the Fourth Proportional to 209,175.60, 288,668.70 and 128,650.44
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Solution
The fourth proportional to 209,175.60, 288,668.70 and 128,650.44 is: 177,541.53
Step by Step Solution
- Step 1: Write the proportion equation
209,175.60 : 288,668.70 = 128,650.44 : x - Step 2: Convert to fraction form
209,175.60/288,668.70 = 128,650.44/x - Step 3: Cross multiply
209,175.60x = 288,668.70 × 128,650.44 - Step 4: Simplify right side
209,175.60x = 37,137,355,269.23 - Step 5: Solve for x
x = 37,137,355,269.23/209,175.60 - Step 6: Final answer
x = 177,541.53
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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.