Finding the Fourth Proportional to 417,851.80, 626,867.62 and 129,657.70
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Solution
The fourth proportional to 417,851.80, 626,867.62 and 129,657.70 is: 194,514.45
Step by Step Solution
- Step 1: Write the proportion equation
417,851.80 : 626,867.62 = 129,657.70 : x - Step 2: Convert to fraction form
417,851.80/626,867.62 = 129,657.70/x - Step 3: Cross multiply
417,851.80x = 626,867.62 × 129,657.70 - Step 4: Simplify right side
417,851.80x = 81,278,211,922.36 - Step 5: Solve for x
x = 81,278,211,922.36/417,851.80 - Step 6: Final answer
x = 194,514.45
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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.