Finding the Fourth Proportional to 305,041.68, 420,965.91 and 167,228.28
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Solution
The fourth proportional to 305,041.68, 420,965.91 and 167,228.28 is: 230,779.63
Step by Step Solution
- Step 1: Write the proportion equation
305,041.68 : 420,965.91 = 167,228.28 : x - Step 2: Convert to fraction form
305,041.68/420,965.91 = 167,228.28/x - Step 3: Cross multiply
305,041.68x = 420,965.91 × 167,228.28 - Step 4: Simplify right side
305,041.68x = 70,397,405,067.93 - Step 5: Solve for x
x = 70,397,405,067.93/305,041.68 - Step 6: Final answer
x = 230,779.63
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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.