Finding the Fourth Proportional to 247,213.75, 341,153.09 and 139,787.62
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Solution
The fourth proportional to 247,213.75, 341,153.09 and 139,787.62 is: 192,905.85
Step by Step Solution
- Step 1: Write the proportion equation
247,213.75 : 341,153.09 = 139,787.62 : x - Step 2: Convert to fraction form
247,213.75/341,153.09 = 139,787.62/x - Step 3: Cross multiply
247,213.75x = 341,153.09 × 139,787.62 - Step 4: Simplify right side
247,213.75x = 47,688,978,506.75 - Step 5: Solve for x
x = 47,688,978,506.75/247,213.75 - Step 6: Final answer
x = 192,905.85
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1.5x scale
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.