Finding the Fourth Proportional to 245,621.45, 338,958.99 and 138,193.31
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Solution
The fourth proportional to 245,621.45, 338,958.99 and 138,193.31 is: 190,707.55
Step by Step Solution
- Step 1: Write the proportion equation
245,621.45 : 338,958.99 = 138,193.31 : x - Step 2: Convert to fraction form
245,621.45/338,958.99 = 138,193.31/x - Step 3: Cross multiply
245,621.45x = 338,958.99 × 138,193.31 - Step 4: Simplify right side
245,621.45x = 46,841,863,087.56 - Step 5: Solve for x
x = 46,841,863,087.56/245,621.45 - Step 6: Final answer
x = 190,707.55
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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.