Finding the Fourth Proportional to 421,946.24, 582,286.44 and 230,971.72
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Solution
The fourth proportional to 421,946.24, 582,286.44 and 230,971.72 is: 318,741.32
Step by Step Solution
- Step 1: Write the proportion equation
421,946.24 : 582,286.44 = 230,971.72 : x - Step 2: Convert to fraction form
421,946.24/582,286.44 = 230,971.72/x - Step 3: Cross multiply
421,946.24x = 582,286.44 × 230,971.72 - Step 4: Simplify right side
421,946.24x = 134,491,700,579.48 - Step 5: Solve for x
x = 134,491,700,579.48/421,946.24 - Step 6: Final answer
x = 318,741.32
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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.