Finding the Fourth Proportional to 260,063.20, 389,438.70 and 207,575.20
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Solution
The fourth proportional to 260,063.20, 389,438.70 and 207,575.20 is: 310,839.12
Step by Step Solution
- Step 1: Write the proportion equation
260,063.20 : 389,438.70 = 207,575.20 : x - Step 2: Convert to fraction form
260,063.20/389,438.70 = 207,575.20/x - Step 3: Cross multiply
260,063.20x = 389,438.70 × 207,575.20 - Step 4: Simplify right side
260,063.20x = 80,837,816,040.24 - Step 5: Solve for x
x = 80,837,816,040.24/260,063.20 - Step 6: Final answer
x = 310,839.12
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1.5x scale
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.