Finding the Fourth Proportional to 421,908.10, 582,233.18 and 230,921.49
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Solution
The fourth proportional to 421,908.10, 582,233.18 and 230,921.49 is: 318,671.66
Step by Step Solution
- Step 1: Write the proportion equation
421,908.10 : 582,233.18 = 230,921.49 : x - Step 2: Convert to fraction form
421,908.10/582,233.18 = 230,921.49/x - Step 3: Cross multiply
421,908.10x = 582,233.18 × 230,921.49 - Step 4: Simplify right side
421,908.10x = 134,450,153,453.04 - Step 5: Solve for x
x = 134,450,153,453.04/421,908.10 - Step 6: Final answer
x = 318,671.66
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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.