Finding the Fourth Proportional to 288,990.36, 398,807.28 and 161,668.08
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Solution
The fourth proportional to 288,990.36, 398,807.28 and 161,668.08 is: 223,102.28
Step by Step Solution
- Step 1: Write the proportion equation
288,990.36 : 398,807.28 = 161,668.08 : x - Step 2: Convert to fraction form
288,990.36/398,807.28 = 161,668.08/x - Step 3: Cross multiply
288,990.36x = 398,807.28 × 161,668.08 - Step 4: Simplify right side
288,990.36x = 64,474,407,247.62 - Step 5: Solve for x
x = 64,474,407,247.62/288,990.36 - Step 6: Final answer
x = 223,102.28
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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.