Finding the Fourth Proportional to 398,781.68, 550,007.60 and 255,555.08
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Solution
The fourth proportional to 398,781.68, 550,007.60 and 255,555.08 is: 352,466.63
Step by Step Solution
- Step 1: Write the proportion equation
398,781.68 : 550,007.60 = 255,555.08 : x - Step 2: Convert to fraction form
398,781.68/550,007.60 = 255,555.08/x - Step 3: Cross multiply
398,781.68x = 550,007.60 × 255,555.08 - Step 4: Simplify right side
398,781.68x = 140,557,236,218.61 - Step 5: Solve for x
x = 140,557,236,218.61/398,781.68 - Step 6: Final answer
x = 352,466.63
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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.