Finding the Fourth Proportional to 415,130.40, 622,695.60 and 115,657.20
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Solution
The fourth proportional to 415,130.40, 622,695.60 and 115,657.20 is: 173,485.80
Step by Step Solution
- Step 1: Write the proportion equation
415,130.40 : 622,695.60 = 115,657.20 : x - Step 2: Convert to fraction form
415,130.40/622,695.60 = 115,657.20/x - Step 3: Cross multiply
415,130.40x = 622,695.60 × 115,657.20 - Step 4: Simplify right side
415,130.40x = 72,019,229,548.32 - Step 5: Solve for x
x = 72,019,229,548.32/415,130.40 - Step 6: Final answer
x = 173,485.80
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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.