Finding the Fourth Proportional to 397,458.68, 548,331.12 and 225,340.40
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Solution
The fourth proportional to 397,458.68, 548,331.12 and 225,340.40 is: 310,877.99
Step by Step Solution
- Step 1: Write the proportion equation
397,458.68 : 548,331.12 = 225,340.40 : x - Step 2: Convert to fraction form
397,458.68/548,331.12 = 225,340.40/x - Step 3: Cross multiply
397,458.68x = 548,331.12 × 225,340.40 - Step 4: Simplify right side
397,458.68x = 123,561,153,913.25 - Step 5: Solve for x
x = 123,561,153,913.25/397,458.68 - Step 6: Final answer
x = 310,877.99
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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.