Finding the Fourth Proportional to 421,366.46, 581,343.28 and 239,949.74
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Solution
The fourth proportional to 421,366.46, 581,343.28 and 239,949.74 is: 331,049.54
Step by Step Solution
- Step 1: Write the proportion equation
421,366.46 : 581,343.28 = 239,949.74 : x - Step 2: Convert to fraction form
421,366.46/581,343.28 = 239,949.74/x - Step 3: Cross multiply
421,366.46x = 581,343.28 × 239,949.74 - Step 4: Simplify right side
421,366.46x = 139,493,169,740.23 - Step 5: Solve for x
x = 139,493,169,740.23/421,366.46 - Step 6: Final answer
x = 331,049.54
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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.