Finding the Fourth Proportional to 405,142.40, 559,107.81 and 223,866.08
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Solution
The fourth proportional to 405,142.40, 559,107.81 and 223,866.08 is: 308,941.43
Step by Step Solution
- Step 1: Write the proportion equation
405,142.40 : 559,107.81 = 223,866.08 : x - Step 2: Convert to fraction form
405,142.40/559,107.81 = 223,866.08/x - Step 3: Cross multiply
405,142.40x = 559,107.81 × 223,866.08 - Step 4: Simplify right side
405,142.40x = 125,165,273,722.09 - Step 5: Solve for x
x = 125,165,273,722.09/405,142.40 - Step 6: Final answer
x = 308,941.43
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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.