Finding the Fourth Proportional to 305,987.40, 422,193.60 and 185,125.68
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Solution
The fourth proportional to 305,987.40, 422,193.60 and 185,125.68 is: 255,431.69
Step by Step Solution
- Step 1: Write the proportion equation
305,987.40 : 422,193.60 = 185,125.68 : x - Step 2: Convert to fraction form
305,987.40/422,193.60 = 185,125.68/x - Step 3: Cross multiply
305,987.40x = 422,193.60 × 185,125.68 - Step 4: Simplify right side
305,987.40x = 78,158,877,291.65 - Step 5: Solve for x
x = 78,158,877,291.65/305,987.40 - Step 6: Final answer
x = 255,431.69
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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.