Finding the Fourth Proportional to 421,427.76, 581,591.92 and 230,439.12
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Solution
The fourth proportional to 421,427.76, 581,591.92 and 230,439.12 is: 318,017.80
Step by Step Solution
- Step 1: Write the proportion equation
421,427.76 : 581,591.92 = 230,439.12 : x - Step 2: Convert to fraction form
421,427.76/581,591.92 = 230,439.12/x - Step 3: Cross multiply
421,427.76x = 581,591.92 × 230,439.12 - Step 4: Simplify right side
421,427.76x = 134,021,530,243.91 - Step 5: Solve for x
x = 134,021,530,243.91/421,427.76 - Step 6: Final answer
x = 318,017.80
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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.