Finding the Fourth Proportional to 253,087.72, 349,262.64 and 138,366.62
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Solution
The fourth proportional to 253,087.72, 349,262.64 and 138,366.62 is: 190,946.80
Step by Step Solution
- Step 1: Write the proportion equation
253,087.72 : 349,262.64 = 138,366.62 : x - Step 2: Convert to fraction form
253,087.72/349,262.64 = 138,366.62/x - Step 3: Cross multiply
253,087.72x = 349,262.64 × 138,366.62 - Step 4: Simplify right side
253,087.72x = 48,326,290,989.08 - Step 5: Solve for x
x = 48,326,290,989.08/253,087.72 - Step 6: Final answer
x = 190,946.80
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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.