Finding the Fourth Proportional to 264,861.20, 397,291.80 and 212,373.20
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Solution
The fourth proportional to 264,861.20, 397,291.80 and 212,373.20 is: 318,559.80
Step by Step Solution
- Step 1: Write the proportion equation
264,861.20 : 397,291.80 = 212,373.20 : x - Step 2: Convert to fraction form
264,861.20/397,291.80 = 212,373.20/x - Step 3: Cross multiply
264,861.20x = 397,291.80 × 212,373.20 - Step 4: Simplify right side
264,861.20x = 84,374,130,899.76 - Step 5: Solve for x
x = 84,374,130,899.76/264,861.20 - Step 6: Final answer
x = 318,559.80
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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.