Finding the Fourth Proportional to 270,371.76, 405,306.63 and 128,283.81
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Solution
The fourth proportional to 270,371.76, 405,306.63 and 128,283.81 is: 192,306.62
Step by Step Solution
- Step 1: Write the proportion equation
270,371.76 : 405,306.63 = 128,283.81 : x - Step 2: Convert to fraction form
270,371.76/405,306.63 = 128,283.81/x - Step 3: Cross multiply
270,371.76x = 405,306.63 × 128,283.81 - Step 4: Simplify right side
270,371.76x = 51,994,278,714.66 - Step 5: Solve for x
x = 51,994,278,714.66/270,371.76 - Step 6: Final answer
x = 192,306.62
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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.