Finding the Fourth Proportional to 355,368.12, 490,407.18 and 202,406.28
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Solution
The fourth proportional to 355,368.12, 490,407.18 and 202,406.28 is: 279,320.20
Step by Step Solution
- Step 1: Write the proportion equation
355,368.12 : 490,407.18 = 202,406.28 : x - Step 2: Convert to fraction form
355,368.12/490,407.18 = 202,406.28/x - Step 3: Cross multiply
355,368.12x = 490,407.18 × 202,406.28 - Step 4: Simplify right side
355,368.12x = 99,261,492,989.09 - Step 5: Solve for x
x = 99,261,492,989.09/355,368.12 - Step 6: Final answer
x = 279,320.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.