Finding the Fourth Proportional to 285,708.08, 394,268.56 and 156,643.88
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Solution
The fourth proportional to 285,708.08, 394,268.56 and 156,643.88 is: 216,163.84
Step by Step Solution
- Step 1: Write the proportion equation
285,708.08 : 394,268.56 = 156,643.88 : x - Step 2: Convert to fraction form
285,708.08/394,268.56 = 156,643.88/x - Step 3: Cross multiply
285,708.08x = 394,268.56 × 156,643.88 - Step 4: Simplify right side
285,708.08x = 61,759,757,000.41 - Step 5: Solve for x
x = 61,759,757,000.41/285,708.08 - Step 6: Final answer
x = 216,163.84
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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.