Finding the Fourth Proportional to 273,208.80, 409,813.20 and 86,239.20
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Solution
The fourth proportional to 273,208.80, 409,813.20 and 86,239.20 is: 129,358.80
Step by Step Solution
- Step 1: Write the proportion equation
273,208.80 : 409,813.20 = 86,239.20 : x - Step 2: Convert to fraction form
273,208.80/409,813.20 = 86,239.20/x - Step 3: Cross multiply
273,208.80x = 409,813.20 × 86,239.20 - Step 4: Simplify right side
273,208.80x = 35,341,962,517.44 - Step 5: Solve for x
x = 35,341,962,517.44/273,208.80 - Step 6: Final answer
x = 129,358.80
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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.