Finding the Fourth Proportional to 215,815.91, 297,826.14 and 120,320.69
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Solution
The fourth proportional to 215,815.91, 297,826.14 and 120,320.69 is: 166,042.65
Step by Step Solution
- Step 1: Write the proportion equation
215,815.91 : 297,826.14 = 120,320.69 : x - Step 2: Convert to fraction form
215,815.91/297,826.14 = 120,320.69/x - Step 3: Cross multiply
215,815.91x = 297,826.14 × 120,320.69 - Step 4: Simplify right side
215,815.91x = 35,834,646,664.84 - Step 5: Solve for x
x = 35,834,646,664.84/215,815.91 - Step 6: Final answer
x = 166,042.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.