Finding the Fourth Proportional to 421,660.75, 581,905.60 and 230,674.15
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Solution
The fourth proportional to 421,660.75, 581,905.60 and 230,674.15 is: 318,337.86
Step by Step Solution
- Step 1: Write the proportion equation
421,660.75 : 581,905.60 = 230,674.15 : x - Step 2: Convert to fraction form
421,660.75/581,905.60 = 230,674.15/x - Step 3: Cross multiply
421,660.75x = 581,905.60 × 230,674.15 - Step 4: Simplify right side
421,660.75x = 134,230,579,660.24 - Step 5: Solve for x
x = 134,230,579,660.24/421,660.75 - Step 6: Final answer
x = 318,337.86
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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.