Finding the Fourth Proportional to 420,900.60, 580,821.18 and 229,877.09
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Solution
The fourth proportional to 420,900.60, 580,821.18 and 229,877.09 is: 317,218.56
Step by Step Solution
- Step 1: Write the proportion equation
420,900.60 : 580,821.18 = 229,877.09 : x - Step 2: Convert to fraction form
420,900.60/580,821.18 = 229,877.09/x - Step 3: Cross multiply
420,900.60x = 580,821.18 × 229,877.09 - Step 4: Simplify right side
420,900.60x = 133,517,482,373.76 - Step 5: Solve for x
x = 133,517,482,373.76/420,900.60 - Step 6: Final answer
x = 317,218.56
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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.