Finding the Fourth Proportional to 253,601.36, 349,965.60 and 140,421.68
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Solution
The fourth proportional to 253,601.36, 349,965.60 and 140,421.68 is: 193,779.55
Step by Step Solution
- Step 1: Write the proportion equation
253,601.36 : 349,965.60 = 140,421.68 : x - Step 2: Convert to fraction form
253,601.36/349,965.60 = 140,421.68/x - Step 3: Cross multiply
253,601.36x = 349,965.60 × 140,421.68 - Step 4: Simplify right side
253,601.36x = 49,142,757,494.21 - Step 5: Solve for x
x = 49,142,757,494.21/253,601.36 - Step 6: Final answer
x = 193,779.55
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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.