Finding the Fourth Proportional to 256,778.09, 384,958.44 and 107,129.88
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Solution
The fourth proportional to 256,778.09, 384,958.44 and 107,129.88 is: 160,607.75
Step by Step Solution
- Step 1: Write the proportion equation
256,778.09 : 384,958.44 = 107,129.88 : x - Step 2: Convert to fraction form
256,778.09/384,958.44 = 107,129.88/x - Step 3: Cross multiply
256,778.09x = 384,958.44 × 107,129.88 - Step 4: Simplify right side
256,778.09x = 41,240,551,482.19 - Step 5: Solve for x
x = 41,240,551,482.19/256,778.09 - Step 6: Final answer
x = 160,607.75
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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.