Finding the Fourth Proportional to 402,619.80, 603,929.70 and 215,995.80
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Solution
The fourth proportional to 402,619.80, 603,929.70 and 215,995.80 is: 323,993.70
Step by Step Solution
- Step 1: Write the proportion equation
402,619.80 : 603,929.70 = 215,995.80 : x - Step 2: Convert to fraction form
402,619.80/603,929.70 = 215,995.80/x - Step 3: Cross multiply
402,619.80x = 603,929.70 × 215,995.80 - Step 4: Simplify right side
402,619.80x = 130,446,278,695.26 - Step 5: Solve for x
x = 130,446,278,695.26/402,619.80 - Step 6: Final answer
x = 323,993.70
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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.