Finding the Fourth Proportional to 308,485.08, 425,731.12 and 172,531.68
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Solution
The fourth proportional to 308,485.08, 425,731.12 and 172,531.68 is: 238,105.86
Step by Step Solution
- Step 1: Write the proportion equation
308,485.08 : 425,731.12 = 172,531.68 : x - Step 2: Convert to fraction form
308,485.08/425,731.12 = 172,531.68/x - Step 3: Cross multiply
308,485.08x = 425,731.12 × 172,531.68 - Step 4: Simplify right side
308,485.08x = 73,452,105,361.88 - Step 5: Solve for x
x = 73,452,105,361.88/308,485.08 - Step 6: Final answer
x = 238,105.86
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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.