Finding the Fourth Proportional to 235,812.76, 325,428.41 and 128,384.62
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Solution
The fourth proportional to 235,812.76, 325,428.41 and 128,384.62 is: 177,174.48
Step by Step Solution
- Step 1: Write the proportion equation
235,812.76 : 325,428.41 = 128,384.62 : x - Step 2: Convert to fraction form
235,812.76/325,428.41 = 128,384.62/x - Step 3: Cross multiply
235,812.76x = 325,428.41 × 128,384.62 - Step 4: Simplify right side
235,812.76x = 41,780,002,755.05 - Step 5: Solve for x
x = 41,780,002,755.05/235,812.76 - Step 6: Final answer
x = 177,174.48
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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.