Finding the Fourth Proportional to 5,173,418.21, 7,138,975.59 and 3,107,206.06
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Solution
The fourth proportional to 5,173,418.21, 7,138,975.59 and 3,107,206.06 is: 4,287,739.22
Step by Step Solution
- Step 1: Write the proportion equation
5,173,418.21 : 7,138,975.59 = 3,107,206.06 : x - Step 2: Convert to fraction form
5,173,418.21/7,138,975.59 = 3,107,206.06/x - Step 3: Cross multiply
5,173,418.21x = 7,138,975.59 × 3,107,206.06 - Step 4: Simplify right side
5,173,418.21x = 22,182,268,179,745.20 - Step 5: Solve for x
x = 22,182,268,179,745.20/5,173,418.21 - Step 6: Final answer
x = 4,287,739.22
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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.