Finding the Fourth Proportional to 280,491.09, 420,736.62 and 70,129.02
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Solution
The fourth proportional to 280,491.09, 420,736.62 and 70,129.02 is: 105,193.53
Step by Step Solution
- Step 1: Write the proportion equation
280,491.09 : 420,736.62 = 70,129.02 : x - Step 2: Convert to fraction form
280,491.09/420,736.62 = 70,129.02/x - Step 3: Cross multiply
280,491.09x = 420,736.62 × 70,129.02 - Step 4: Simplify right side
280,491.09x = 29,505,848,679.46 - Step 5: Solve for x
x = 29,505,848,679.46/280,491.09 - Step 6: Final answer
x = 105,193.53
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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.