Finding the Fourth Proportional to 405,518.28, 608,364.36 and 121,231.08
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Solution
The fourth proportional to 405,518.28, 608,364.36 and 121,231.08 is: 181,872.61
Step by Step Solution
- Step 1: Write the proportion equation
405,518.28 : 608,364.36 = 121,231.08 : x - Step 2: Convert to fraction form
405,518.28/608,364.36 = 121,231.08/x - Step 3: Cross multiply
405,518.28x = 608,364.36 × 121,231.08 - Step 4: Simplify right side
405,518.28x = 73,752,668,396.31 - Step 5: Solve for x
x = 73,752,668,396.31/405,518.28 - Step 6: Final answer
x = 181,872.61
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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.