Finding the Fourth Proportional to 253,464.15, 349,766.19 and 138,721.17
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Solution
The fourth proportional to 253,464.15, 349,766.19 and 138,721.17 is: 191,427.37
Step by Step Solution
- Step 1: Write the proportion equation
253,464.15 : 349,766.19 = 138,721.17 : x - Step 2: Convert to fraction form
253,464.15/349,766.19 = 138,721.17/x - Step 3: Cross multiply
253,464.15x = 349,766.19 × 138,721.17 - Step 4: Simplify right side
253,464.15x = 48,519,975,103.24 - Step 5: Solve for x
x = 48,519,975,103.24/253,464.15 - Step 6: Final answer
x = 191,427.37
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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.