Finding the Fourth Proportional to 421,711.71, 581,976.69 and 230,725.09
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Solution
The fourth proportional to 421,711.71, 581,976.69 and 230,725.09 is: 318,408.58
Step by Step Solution
- Step 1: Write the proportion equation
421,711.71 : 581,976.69 = 230,725.09 : x - Step 2: Convert to fraction form
421,711.71/581,976.69 = 230,725.09/x - Step 3: Cross multiply
421,711.71x = 581,976.69 × 230,725.09 - Step 4: Simplify right side
421,711.71x = 134,276,624,040.40 - Step 5: Solve for x
x = 134,276,624,040.40/421,711.71 - Step 6: Final answer
x = 318,408.58
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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.