Finding the Fourth Proportional to 218,422.16, 327,515.79 and 128,495.96
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Solution
The fourth proportional to 218,422.16, 327,515.79 and 128,495.96 is: 192,674.85
Step by Step Solution
- Step 1: Write the proportion equation
218,422.16 : 327,515.79 = 128,495.96 : x - Step 2: Convert to fraction form
218,422.16/327,515.79 = 128,495.96/x - Step 3: Cross multiply
218,422.16x = 327,515.79 × 128,495.96 - Step 4: Simplify right side
218,422.16x = 42,084,455,851.21 - Step 5: Solve for x
x = 42,084,455,851.21/218,422.16 - Step 6: Final answer
x = 192,674.85
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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.