Finding the Fourth Proportional to 439,611.80, 659,417.70 and 203,415.80
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Solution
The fourth proportional to 439,611.80, 659,417.70 and 203,415.80 is: 305,123.70
Step by Step Solution
- Step 1: Write the proportion equation
439,611.80 : 659,417.70 = 203,415.80 : x - Step 2: Convert to fraction form
439,611.80/659,417.70 = 203,415.80/x - Step 3: Cross multiply
439,611.80x = 659,417.70 × 203,415.80 - Step 4: Simplify right side
439,611.80x = 134,135,978,979.66 - Step 5: Solve for x
x = 134,135,978,979.66/439,611.80 - Step 6: Final answer
x = 305,123.70
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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.