Finding the Fourth Proportional to 420,578.68, 580,399.62 and 229,592.20
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Solution
The fourth proportional to 420,578.68, 580,399.62 and 229,592.20 is: 316,837.80
Step by Step Solution
- Step 1: Write the proportion equation
420,578.68 : 580,399.62 = 229,592.20 : x - Step 2: Convert to fraction form
420,578.68/580,399.62 = 229,592.20/x - Step 3: Cross multiply
420,578.68x = 580,399.62 × 229,592.20 - Step 4: Simplify right side
420,578.68x = 133,255,225,634.96 - Step 5: Solve for x
x = 133,255,225,634.96/420,578.68 - Step 6: Final answer
x = 316,837.80
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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.