Finding the Fourth Proportional to 203,482.80, 305,013.60 and 91,216.80
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Solution
The fourth proportional to 203,482.80, 305,013.60 and 91,216.80 is: 136,730.79
Step by Step Solution
- Step 1: Write the proportion equation
203,482.80 : 305,013.60 = 91,216.80 : x - Step 2: Convert to fraction form
203,482.80/305,013.60 = 91,216.80/x - Step 3: Cross multiply
203,482.80x = 305,013.60 × 91,216.80 - Step 4: Simplify right side
203,482.80x = 27,822,364,548.48 - Step 5: Solve for x
x = 27,822,364,548.48/203,482.80 - Step 6: Final answer
x = 136,730.79
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1.5x scale
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.