Finding the Fourth Proportional to 394,935.12, 592,341.84 and 128,694.96
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Solution
The fourth proportional to 394,935.12, 592,341.84 and 128,694.96 is: 193,022.61
Step by Step Solution
- Step 1: Write the proportion equation
394,935.12 : 592,341.84 = 128,694.96 : x - Step 2: Convert to fraction form
394,935.12/592,341.84 = 128,694.96/x - Step 3: Cross multiply
394,935.12x = 592,341.84 × 128,694.96 - Step 4: Simplify right side
394,935.12x = 76,231,409,405.13 - Step 5: Solve for x
x = 76,231,409,405.13/394,935.12 - Step 6: Final answer
x = 193,022.61
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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.