Finding the Fourth Proportional to 305,985.44, 459,157.80 and 128,478.80
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Solution
The fourth proportional to 305,985.44, 459,157.80 and 128,478.80 is: 192,793.63
Step by Step Solution
- Step 1: Write the proportion equation
305,985.44 : 459,157.80 = 128,478.80 : x - Step 2: Convert to fraction form
305,985.44/459,157.80 = 128,478.80/x - Step 3: Cross multiply
305,985.44x = 459,157.80 × 128,478.80 - Step 4: Simplify right side
305,985.44x = 58,992,043,154.64 - Step 5: Solve for x
x = 58,992,043,154.64/305,985.44 - Step 6: Final answer
x = 192,793.63
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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.