Finding the Fourth Proportional to 209,136.63, 288,585.12 and 118,473.18
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Solution
The fourth proportional to 209,136.63, 288,585.12 and 118,473.18 is: 163,479.72
Step by Step Solution
- Step 1: Write the proportion equation
209,136.63 : 288,585.12 = 118,473.18 : x - Step 2: Convert to fraction form
209,136.63/288,585.12 = 118,473.18/x - Step 3: Cross multiply
209,136.63x = 288,585.12 × 118,473.18 - Step 4: Simplify right side
209,136.63x = 34,189,596,867.08 - Step 5: Solve for x
x = 34,189,596,867.08/209,136.63 - Step 6: Final answer
x = 163,479.72
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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.