Finding the Fourth Proportional to 388,120.98, 582,148.12 and 236,278.65
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Solution
The fourth proportional to 388,120.98, 582,148.12 and 236,278.65 is: 354,397.67
Step by Step Solution
- Step 1: Write the proportion equation
388,120.98 : 582,148.12 = 236,278.65 : x - Step 2: Convert to fraction form
388,120.98/582,148.12 = 236,278.65/x - Step 3: Cross multiply
388,120.98x = 582,148.12 × 236,278.65 - Step 4: Simplify right side
388,120.98x = 137,549,171,893.64 - Step 5: Solve for x
x = 137,549,171,893.64/388,120.98 - Step 6: Final answer
x = 354,397.67
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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.