Finding the Fourth Proportional to 256,539.79, 384,816.30 and 121,572.19
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Solution
The fourth proportional to 256,539.79, 384,816.30 and 121,572.19 is: 182,361.42
Step by Step Solution
- Step 1: Write the proportion equation
256,539.79 : 384,816.30 = 121,572.19 : x - Step 2: Convert to fraction form
256,539.79/384,816.30 = 121,572.19/x - Step 3: Cross multiply
256,539.79x = 384,816.30 × 121,572.19 - Step 4: Simplify right side
256,539.79x = 46,782,960,338.70 - Step 5: Solve for x
x = 46,782,960,338.70/256,539.79 - Step 6: Final answer
x = 182,361.42
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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.