Finding the Fourth Proportional to 281,345.31, 388,278.09 and 160,489.26
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Solution
The fourth proportional to 281,345.31, 388,278.09 and 160,489.26 is: 221,487.48
Step by Step Solution
- Step 1: Write the proportion equation
281,345.31 : 388,278.09 = 160,489.26 : x - Step 2: Convert to fraction form
281,345.31/388,278.09 = 160,489.26/x - Step 3: Cross multiply
281,345.31x = 388,278.09 × 160,489.26 - Step 4: Simplify right side
281,345.31x = 62,314,463,338.31 - Step 5: Solve for x
x = 62,314,463,338.31/281,345.31 - Step 6: Final answer
x = 221,487.48
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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.