Finding the Fourth Proportional to 218,274.05, 301,215.21 and 122,780.84
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Solution
The fourth proportional to 218,274.05, 301,215.21 and 122,780.84 is: 169,435.88
Step by Step Solution
- Step 1: Write the proportion equation
218,274.05 : 301,215.21 = 122,780.84 : x - Step 2: Convert to fraction form
218,274.05/301,215.21 = 122,780.84/x - Step 3: Cross multiply
218,274.05x = 301,215.21 × 122,780.84 - Step 4: Simplify right side
218,274.05x = 36,983,454,998.50 - Step 5: Solve for x
x = 36,983,454,998.50/218,274.05 - Step 6: Final answer
x = 169,435.88
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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.