Finding the Fourth Proportional to 355,523.77, 490,630.53 and 212,257.09
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Solution
The fourth proportional to 355,523.77, 490,630.53 and 212,257.09 is: 292,919.40
Step by Step Solution
- Step 1: Write the proportion equation
355,523.77 : 490,630.53 = 212,257.09 : x - Step 2: Convert to fraction form
355,523.77/490,630.53 = 212,257.09/x - Step 3: Cross multiply
355,523.77x = 490,630.53 × 212,257.09 - Step 4: Simplify right side
355,523.77x = 104,139,808,562.96 - Step 5: Solve for x
x = 104,139,808,562.96/355,523.77 - Step 6: Final answer
x = 292,919.40
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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.