Finding the Fourth Proportional to 203,718.12, 305,403.44 and 77,287.65
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Solution
The fourth proportional to 203,718.12, 305,403.44 and 77,287.65 is: 115,865.56
Step by Step Solution
- Step 1: Write the proportion equation
203,718.12 : 305,403.44 = 77,287.65 : x - Step 2: Convert to fraction form
203,718.12/305,403.44 = 77,287.65/x - Step 3: Cross multiply
203,718.12x = 305,403.44 × 77,287.65 - Step 4: Simplify right side
203,718.12x = 23,603,913,793.08 - Step 5: Solve for x
x = 23,603,913,793.08/203,718.12 - Step 6: Final answer
x = 115,865.56
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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.