Finding the Fourth Proportional to 328,114.99, 492,213.49 and 128,409.56
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Solution
The fourth proportional to 328,114.99, 492,213.49 and 128,409.56 is: 192,630.38
Step by Step Solution
- Step 1: Write the proportion equation
328,114.99 : 492,213.49 = 128,409.56 : x - Step 2: Convert to fraction form
328,114.99/492,213.49 = 128,409.56/x - Step 3: Cross multiply
328,114.99x = 492,213.49 × 128,409.56 - Step 4: Simplify right side
328,114.99x = 63,204,914,894.87 - Step 5: Solve for x
x = 63,204,914,894.87/328,114.99 - Step 6: Final answer
x = 192,630.38
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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.