Finding the Fourth Proportional to 280,185.31, 386,639.97 and 159,355.99
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Solution
The fourth proportional to 280,185.31, 386,639.97 and 159,355.99 is: 219,902.30
Step by Step Solution
- Step 1: Write the proportion equation
280,185.31 : 386,639.97 = 159,355.99 : x - Step 2: Convert to fraction form
280,185.31/386,639.97 = 159,355.99/x - Step 3: Cross multiply
280,185.31x = 386,639.97 × 159,355.99 - Step 4: Simplify right side
280,185.31x = 61,613,395,078.64 - Step 5: Solve for x
x = 61,613,395,078.64/280,185.31 - Step 6: Final answer
x = 219,902.30
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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.