Finding the Fourth Proportional to 209,143.26, 288,628.76 and 118,516.80
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Solution
The fourth proportional to 209,143.26, 288,628.76 and 118,516.80 is: 163,559.45
Step by Step Solution
- Step 1: Write the proportion equation
209,143.26 : 288,628.76 = 118,516.80 : x - Step 2: Convert to fraction form
209,143.26/288,628.76 = 118,516.80/x - Step 3: Cross multiply
209,143.26x = 288,628.76 × 118,516.80 - Step 4: Simplify right side
209,143.26x = 34,207,357,023.17 - Step 5: Solve for x
x = 34,207,357,023.17/209,143.26 - Step 6: Final answer
x = 163,559.45
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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.