Finding the Fourth Proportional to 203,909.40, 305,718.30 and 91,497.60
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Solution
The fourth proportional to 203,909.40, 305,718.30 and 91,497.60 is: 137,180.98
Step by Step Solution
- Step 1: Write the proportion equation
203,909.40 : 305,718.30 = 91,497.60 : x - Step 2: Convert to fraction form
203,909.40/305,718.30 = 91,497.60/x - Step 3: Cross multiply
203,909.40x = 305,718.30 × 91,497.60 - Step 4: Simplify right side
203,909.40x = 27,972,490,726.08 - Step 5: Solve for x
x = 27,972,490,726.08/203,909.40 - Step 6: Final answer
x = 137,180.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.