Finding the Fourth Proportional to 405,321.10, 559,344.88 and 221,563.42
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Solution
The fourth proportional to 405,321.10, 559,344.88 and 221,563.42 is: 305,758.48
Step by Step Solution
- Step 1: Write the proportion equation
405,321.10 : 559,344.88 = 221,563.42 : x - Step 2: Convert to fraction form
405,321.10/559,344.88 = 221,563.42/x - Step 3: Cross multiply
405,321.10x = 559,344.88 × 221,563.42 - Step 4: Simplify right side
405,321.10x = 123,930,364,572.29 - Step 5: Solve for x
x = 123,930,364,572.29/405,321.10 - Step 6: Final answer
x = 305,758.48
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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.