Finding the Fourth Proportional to 220,887,331.20, 331,330,996.80 and 186,875,107.20
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Solution
The fourth proportional to 220,887,331.20, 331,330,996.80 and 186,875,107.20 is: 280,312,660.80
Step by Step Solution
- Step 1: Write the proportion equation
220,887,331.20 : 331,330,996.80 = 186,875,107.20 : x - Step 2: Convert to fraction form
220,887,331.20/331,330,996.80 = 186,875,107.20/x - Step 3: Cross multiply
220,887,331.20x = 331,330,996.80 × 186,875,107.20 - Step 4: Simplify right side
220,887,331.20x = 61,917,515,545,682,856 - Step 5: Solve for x
x = 61,917,515,545,682,856/220,887,331.20 - Step 6: Final answer
x = 280,312,660.80
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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.