Finding the Fourth Proportional to 209,140.26, 288,624.62 and 118,513.80
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Solution
The fourth proportional to 209,140.26, 288,624.62 and 118,513.80 is: 163,555.31
Step by Step Solution
- Step 1: Write the proportion equation
209,140.26 : 288,624.62 = 118,513.80 : x - Step 2: Convert to fraction form
209,140.26/288,624.62 = 118,513.80/x - Step 3: Cross multiply
209,140.26x = 288,624.62 × 118,513.80 - Step 4: Simplify right side
209,140.26x = 34,206,000,489.76 - Step 5: Solve for x
x = 34,206,000,489.76/209,140.26 - Step 6: Final answer
x = 163,555.31
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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.