Finding the Fourth Proportional to 288,975.42, 398,786.74 and 159,923.28
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Solution
The fourth proportional to 288,975.42, 398,786.74 and 159,923.28 is: 220,694.49
Step by Step Solution
- Step 1: Write the proportion equation
288,975.42 : 398,786.74 = 159,923.28 : x - Step 2: Convert to fraction form
288,975.42/398,786.74 = 159,923.28/x - Step 3: Cross multiply
288,975.42x = 398,786.74 × 159,923.28 - Step 4: Simplify right side
288,975.42x = 63,775,283,481.31 - Step 5: Solve for x
x = 63,775,283,481.31/288,975.42 - Step 6: Final answer
x = 220,694.49
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1.5x scale
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.