Finding the Fourth Proportional to 397,143.55, 548,137.86 and 235,967.63
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Solution
The fourth proportional to 397,143.55, 548,137.86 and 235,967.63 is: 325,682.72
Step by Step Solution
- Step 1: Write the proportion equation
397,143.55 : 548,137.86 = 235,967.63 : x - Step 2: Convert to fraction form
397,143.55/548,137.86 = 235,967.63/x - Step 3: Cross multiply
397,143.55x = 548,137.86 × 235,967.63 - Step 4: Simplify right side
397,143.55x = 129,342,788,996.78 - Step 5: Solve for x
x = 129,342,788,996.78/397,143.55 - Step 6: Final answer
x = 325,682.72
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1.5x scale
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.