Finding the Fourth Proportional to 420,436.46, 580,187.67 and 239,134.70
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Solution
The fourth proportional to 420,436.46, 580,187.67 and 239,134.70 is: 329,997.56
Step by Step Solution
- Step 1: Write the proportion equation
420,436.46 : 580,187.67 = 239,134.70 : x - Step 2: Convert to fraction form
420,436.46/580,187.67 = 239,134.70/x - Step 3: Cross multiply
420,436.46x = 580,187.67 × 239,134.70 - Step 4: Simplify right side
420,436.46x = 138,743,004,409.15 - Step 5: Solve for x
x = 138,743,004,409.15/420,436.46 - Step 6: Final answer
x = 329,997.56
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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.