Finding the Fourth Proportional to 221,748.40, 305,925.96 and 136,717.84
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Solution
The fourth proportional to 221,748.40, 305,925.96 and 136,717.84 is: 188,617.08
Step by Step Solution
- Step 1: Write the proportion equation
221,748.40 : 305,925.96 = 136,717.84 : x - Step 2: Convert to fraction form
221,748.40/305,925.96 = 136,717.84/x - Step 3: Cross multiply
221,748.40x = 305,925.96 × 136,717.84 - Step 4: Simplify right side
221,748.40x = 41,825,536,451.13 - Step 5: Solve for x
x = 41,825,536,451.13/221,748.40 - Step 6: Final answer
x = 188,617.08
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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.