Finding the Fourth Proportional to 421,722.57, 581,991.65 and 230,735.91
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Solution
The fourth proportional to 421,722.57, 581,991.65 and 230,735.91 is: 318,423.49
Step by Step Solution
- Step 1: Write the proportion equation
421,722.57 : 581,991.65 = 230,735.91 : x - Step 2: Convert to fraction form
421,722.57/581,991.65 = 230,735.91/x - Step 3: Cross multiply
421,722.57x = 581,991.65 × 230,735.91 - Step 4: Simplify right side
421,722.57x = 134,286,372,975.15 - Step 5: Solve for x
x = 134,286,372,975.15/421,722.57 - Step 6: Final answer
x = 318,423.49
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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.