Finding the Fourth Proportional to 438,228.80, 655,960.80 and 313,812.80
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Solution
The fourth proportional to 438,228.80, 655,960.80 and 313,812.80 is: 469,729.27
Step by Step Solution
- Step 1: Write the proportion equation
438,228.80 : 655,960.80 = 313,812.80 : x - Step 2: Convert to fraction form
438,228.80/655,960.80 = 313,812.80/x - Step 3: Cross multiply
438,228.80x = 655,960.80 × 313,812.80 - Step 4: Simplify right side
438,228.80x = 205,848,895,338.24 - Step 5: Solve for x
x = 205,848,895,338.24/438,228.80 - Step 6: Final answer
x = 469,729.27
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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.