Finding the Fourth Proportional to 210,348.18, 290,278.35 and 129,743.46
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Solution
The fourth proportional to 210,348.18, 290,278.35 and 129,743.46 is: 179,044.66
Step by Step Solution
- Step 1: Write the proportion equation
210,348.18 : 290,278.35 = 129,743.46 : x - Step 2: Convert to fraction form
210,348.18/290,278.35 = 129,743.46/x - Step 3: Cross multiply
210,348.18x = 290,278.35 × 129,743.46 - Step 4: Simplify right side
210,348.18x = 37,661,717,492.09 - Step 5: Solve for x
x = 37,661,717,492.09/210,348.18 - Step 6: Final answer
x = 179,044.66
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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.