Finding the Fourth Proportional to 455,143.80, 682,715.70 and 305,455.80
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Solution
The fourth proportional to 455,143.80, 682,715.70 and 305,455.80 is: 458,183.70
Step by Step Solution
- Step 1: Write the proportion equation
455,143.80 : 682,715.70 = 305,455.80 : x - Step 2: Convert to fraction form
455,143.80/682,715.70 = 305,455.80/x - Step 3: Cross multiply
455,143.80x = 682,715.70 × 305,455.80 - Step 4: Simplify right side
455,143.80x = 208,539,470,316.06 - Step 5: Solve for x
x = 208,539,470,316.06/455,143.80 - Step 6: Final answer
x = 458,183.70
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1.5x scale
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.