Finding the Fourth Proportional to 305,913.21, 422,159.84 and 169,959.71
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Solution
The fourth proportional to 305,913.21, 422,159.84 and 169,959.71 is: 234,544.17
Step by Step Solution
- Step 1: Write the proportion equation
305,913.21 : 422,159.84 = 169,959.71 : x - Step 2: Convert to fraction form
305,913.21/422,159.84 = 169,959.71/x - Step 3: Cross multiply
305,913.21x = 422,159.84 × 169,959.71 - Step 4: Simplify right side
305,913.21x = 71,750,161,019.45 - Step 5: Solve for x
x = 71,750,161,019.45/305,913.21 - Step 6: Final answer
x = 234,544.17
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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.