Finding the Fourth Proportional to 290,951.70, 436,427.64 and 91,287.70
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Solution
The fourth proportional to 290,951.70, 436,427.64 and 91,287.70 is: 136,931.58
Step by Step Solution
- Step 1: Write the proportion equation
290,951.70 : 436,427.64 = 91,287.70 : x - Step 2: Convert to fraction form
290,951.70/436,427.64 = 91,287.70/x - Step 3: Cross multiply
290,951.70x = 436,427.64 × 91,287.70 - Step 4: Simplify right side
290,951.70x = 39,840,475,472.03 - Step 5: Solve for x
x = 39,840,475,472.03/290,951.70 - Step 6: Final answer
x = 136,931.58
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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.