Finding the Fourth Proportional to 420,957.68, 581,113.10 and 268,205.31
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Solution
The fourth proportional to 420,957.68, 581,113.10 and 268,205.31 is: 370,245.35
Step by Step Solution
- Step 1: Write the proportion equation
420,957.68 : 581,113.10 = 268,205.31 : x - Step 2: Convert to fraction form
420,957.68/581,113.10 = 268,205.31/x - Step 3: Cross multiply
420,957.68x = 581,113.10 × 268,205.31 - Step 4: Simplify right side
420,957.68x = 155,857,619,801.07 - Step 5: Solve for x
x = 155,857,619,801.07/420,957.68 - Step 6: Final answer
x = 370,245.35
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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.