Finding the Fourth Proportional to 494,203.80, 741,305.70 and 139,213.20
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Solution
The fourth proportional to 494,203.80, 741,305.70 and 139,213.20 is: 208,819.80
Step by Step Solution
- Step 1: Write the proportion equation
494,203.80 : 741,305.70 = 139,213.20 : x - Step 2: Convert to fraction form
494,203.80/741,305.70 = 139,213.20/x - Step 3: Cross multiply
494,203.80x = 741,305.70 × 139,213.20 - Step 4: Simplify right side
494,203.80x = 103,199,538,675.24 - Step 5: Solve for x
x = 103,199,538,675.24/494,203.80 - Step 6: Final answer
x = 208,819.80
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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.