Finding the Fourth Proportional to 415,729.20, 623,777.40 and 202,378.80
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Solution
The fourth proportional to 415,729.20, 623,777.40 and 202,378.80 is: 303,657.58
Step by Step Solution
- Step 1: Write the proportion equation
415,729.20 : 623,777.40 = 202,378.80 : x - Step 2: Convert to fraction form
415,729.20/623,777.40 = 202,378.80/x - Step 3: Cross multiply
415,729.20x = 623,777.40 × 202,378.80 - Step 4: Simplify right side
415,729.20x = 126,239,321,679.12 - Step 5: Solve for x
x = 126,239,321,679.12/415,729.20 - Step 6: Final answer
x = 303,657.58
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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.