Finding the Fourth Proportional to 209,149.68, 288,480.62 and 137,506.80
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Solution
The fourth proportional to 209,149.68, 288,480.62 and 137,506.80 is: 189,663.44
Step by Step Solution
- Step 1: Write the proportion equation
209,149.68 : 288,480.62 = 137,506.80 : x - Step 2: Convert to fraction form
209,149.68/288,480.62 = 137,506.80/x - Step 3: Cross multiply
209,149.68x = 288,480.62 × 137,506.80 - Step 4: Simplify right side
209,149.68x = 39,668,046,918.22 - Step 5: Solve for x
x = 39,668,046,918.22/209,149.68 - Step 6: Final answer
x = 189,663.44
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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.