Finding the Fourth Proportional to 388,431.51, 536,086.58 and 218,698.71
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Solution
The fourth proportional to 388,431.51, 536,086.58 and 218,698.71 is: 301,832.99
Step by Step Solution
- Step 1: Write the proportion equation
388,431.51 : 536,086.58 = 218,698.71 : x - Step 2: Convert to fraction form
388,431.51/536,086.58 = 218,698.71/x - Step 3: Cross multiply
388,431.51x = 536,086.58 × 218,698.71 - Step 4: Simplify right side
388,431.51x = 117,241,442,400.82 - Step 5: Solve for x
x = 117,241,442,400.82/388,431.51 - Step 6: Final answer
x = 301,832.99
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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.