Finding the Fourth Proportional to 256,938.62, 385,407.99 and 79,441.70
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Solution
The fourth proportional to 256,938.62, 385,407.99 and 79,441.70 is: 119,162.56
Step by Step Solution
- Step 1: Write the proportion equation
256,938.62 : 385,407.99 = 79,441.70 : x - Step 2: Convert to fraction form
256,938.62/385,407.99 = 79,441.70/x - Step 3: Cross multiply
256,938.62x = 385,407.99 × 79,441.70 - Step 4: Simplify right side
256,938.62x = 30,617,463,992.14 - Step 5: Solve for x
x = 30,617,463,992.14/256,938.62 - Step 6: Final answer
x = 119,162.56
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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.