Finding the Fourth Proportional to 439,630.40, 659,224.80 and 215,007.68
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Solution
The fourth proportional to 439,630.40, 659,224.80 and 215,007.68 is: 322,403.53
Step by Step Solution
- Step 1: Write the proportion equation
439,630.40 : 659,224.80 = 215,007.68 : x - Step 2: Convert to fraction form
439,630.40/659,224.80 = 215,007.68/x - Step 3: Cross multiply
439,630.40x = 659,224.80 × 215,007.68 - Step 4: Simplify right side
439,630.40x = 141,738,394,846.46 - Step 5: Solve for x
x = 141,738,394,846.46/439,630.40 - Step 6: Final answer
x = 322,403.53
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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.