Finding the Fourth Proportional to 287,646.21, 396,953.73 and 160,330.14
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Solution
The fourth proportional to 287,646.21, 396,953.73 and 160,330.14 is: 221,256.69
Step by Step Solution
- Step 1: Write the proportion equation
287,646.21 : 396,953.73 = 160,330.14 : x - Step 2: Convert to fraction form
287,646.21/396,953.73 = 160,330.14/x - Step 3: Cross multiply
287,646.21x = 396,953.73 × 160,330.14 - Step 4: Simplify right side
287,646.21x = 63,643,647,104.42 - Step 5: Solve for x
x = 63,643,647,104.42/287,646.21 - Step 6: Final answer
x = 221,256.69
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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.