Finding the Fourth Proportional to 288,690.56, 398,391.84 and 161,366.12
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Solution
The fourth proportional to 288,690.56, 398,391.84 and 161,366.12 is: 222,684.61
Step by Step Solution
- Step 1: Write the proportion equation
288,690.56 : 398,391.84 = 161,366.12 : x - Step 2: Convert to fraction form
288,690.56/398,391.84 = 161,366.12/x - Step 3: Cross multiply
288,690.56x = 398,391.84 × 161,366.12 - Step 4: Simplify right side
288,690.56x = 64,286,945,460.46 - Step 5: Solve for x
x = 64,286,945,460.46/288,690.56 - Step 6: Final answer
x = 222,684.61
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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.