Finding the Fourth Proportional to 288,915.20, 398,700.68 and 161,590.70
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Solution
The fourth proportional to 288,915.20, 398,700.68 and 161,590.70 is: 222,993.88
Step by Step Solution
- Step 1: Write the proportion equation
288,915.20 : 398,700.68 = 161,590.70 : x - Step 2: Convert to fraction form
288,915.20/398,700.68 = 161,590.70/x - Step 3: Cross multiply
288,915.20x = 398,700.68 × 161,590.70 - Step 4: Simplify right side
288,915.20x = 64,426,321,971.68 - Step 5: Solve for x
x = 64,426,321,971.68/288,915.20 - Step 6: Final answer
x = 222,993.88
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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.