Finding the Fourth Proportional to 281,516.19, 388,529.76 and 160,629.77
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Solution
The fourth proportional to 281,516.19, 388,529.76 and 160,629.77 is: 221,690.42
Step by Step Solution
- Step 1: Write the proportion equation
281,516.19 : 388,529.76 = 160,629.77 : x - Step 2: Convert to fraction form
281,516.19/388,529.76 = 160,629.77/x - Step 3: Cross multiply
281,516.19x = 388,529.76 × 160,629.77 - Step 4: Simplify right side
281,516.19x = 62,409,443,743.13 - Step 5: Solve for x
x = 62,409,443,743.13/281,516.19 - Step 6: Final answer
x = 221,690.42
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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.