Finding the Fourth Proportional to 258,905.63, 388,417.26 and 79,007.14
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Solution
The fourth proportional to 258,905.63, 388,417.26 and 79,007.14 is: 118,528.66
Step by Step Solution
- Step 1: Write the proportion equation
258,905.63 : 388,417.26 = 79,007.14 : x - Step 2: Convert to fraction form
258,905.63/388,417.26 = 79,007.14/x - Step 3: Cross multiply
258,905.63x = 388,417.26 × 79,007.14 - Step 4: Simplify right side
258,905.63x = 30,687,736,839.24 - Step 5: Solve for x
x = 30,687,736,839.24/258,905.63 - Step 6: Final answer
x = 118,528.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.