Finding the Fourth Proportional to 384,784,919.73, 531,444,485.70 and 253,213,291.08
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Solution
The fourth proportional to 384,784,919.73, 531,444,485.70 and 253,213,291.08 is: 349,724,743.23
Step by Step Solution
- Step 1: Write the proportion equation
384,784,919.73 : 531,444,485.70 = 253,213,291.08 : x - Step 2: Convert to fraction form
384,784,919.73/531,444,485.70 = 253,213,291.08/x - Step 3: Cross multiply
384,784,919.73x = 531,444,485.70 × 253,213,291.08 - Step 4: Simplify right side
384,784,919.73x = 134,568,807,250,415,008 - Step 5: Solve for x
x = 134,568,807,250,415,008/384,784,919.73 - Step 6: Final answer
x = 349,724,743.23
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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.