Finding the Fourth Proportional to 290,543.19, 400,787.79 and 269,992.98
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Solution
The fourth proportional to 290,543.19, 400,787.79 and 269,992.98 is: 372,439.95
Step by Step Solution
- Step 1: Write the proportion equation
290,543.19 : 400,787.79 = 269,992.98 : x - Step 2: Convert to fraction form
290,543.19/400,787.79 = 269,992.98/x - Step 3: Cross multiply
290,543.19x = 400,787.79 × 269,992.98 - Step 4: Simplify right side
290,543.19x = 108,209,889,769.71 - Step 5: Solve for x
x = 108,209,889,769.71/290,543.19 - Step 6: Final answer
x = 372,439.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.