Finding the Fourth Proportional to 421,495.28, 582,318.42 and 353,406.68
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Solution
The fourth proportional to 421,495.28, 582,318.42 and 353,406.68 is: 488,250.35
Step by Step Solution
- Step 1: Write the proportion equation
421,495.28 : 582,318.42 = 353,406.68 : x - Step 2: Convert to fraction form
421,495.28/582,318.42 = 353,406.68/x - Step 3: Cross multiply
421,495.28x = 582,318.42 × 353,406.68 - Step 4: Simplify right side
421,495.28x = 205,795,219,515.05 - Step 5: Solve for x
x = 205,795,219,515.05/421,495.28 - Step 6: Final answer
x = 488,250.35
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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.