Finding the Fourth Proportional to 290,809.36, 436,382.61 and 122,316.40
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Solution
The fourth proportional to 290,809.36, 436,382.61 and 122,316.40 is: 183,545.50
Step by Step Solution
- Step 1: Write the proportion equation
290,809.36 : 436,382.61 = 122,316.40 : x - Step 2: Convert to fraction form
290,809.36/436,382.61 = 122,316.40/x - Step 3: Cross multiply
290,809.36x = 436,382.61 × 122,316.40 - Step 4: Simplify right side
290,809.36x = 53,376,749,877.80 - Step 5: Solve for x
x = 53,376,749,877.80/290,809.36 - Step 6: Final answer
x = 183,545.50
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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.