Finding the Fourth Proportional to 355,374.12, 490,415.46 and 202,412.28
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Solution
The fourth proportional to 355,374.12, 490,415.46 and 202,412.28 is: 279,328.48
Step by Step Solution
- Step 1: Write the proportion equation
355,374.12 : 490,415.46 = 202,412.28 : x - Step 2: Convert to fraction form
355,374.12/490,415.46 = 202,412.28/x - Step 3: Cross multiply
355,374.12x = 490,415.46 × 202,412.28 - Step 4: Simplify right side
355,374.12x = 99,266,111,405.85 - Step 5: Solve for x
x = 99,266,111,405.85/355,374.12 - Step 6: Final answer
x = 279,328.48
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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.