Finding the Fourth Proportional to 290,855.67, 436,283.64 and 91,191.63
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Solution
The fourth proportional to 290,855.67, 436,283.64 and 91,191.63 is: 136,787.49
Step by Step Solution
- Step 1: Write the proportion equation
290,855.67 : 436,283.64 = 91,191.63 : x - Step 2: Convert to fraction form
290,855.67/436,283.64 = 91,191.63/x - Step 3: Cross multiply
290,855.67x = 436,283.64 × 91,191.63 - Step 4: Simplify right side
290,855.67x = 39,785,416,273.93 - Step 5: Solve for x
x = 39,785,416,273.93/290,855.67 - Step 6: Final answer
x = 136,787.49
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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.