Finding the Fourth Proportional to 285,206.73, 393,585.41 and 156,153.57
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Solution
The fourth proportional to 285,206.73, 393,585.41 and 156,153.57 is: 215,491.99
Step by Step Solution
- Step 1: Write the proportion equation
285,206.73 : 393,585.41 = 156,153.57 : x - Step 2: Convert to fraction form
285,206.73/393,585.41 = 156,153.57/x - Step 3: Cross multiply
285,206.73x = 393,585.41 × 156,153.57 - Step 4: Simplify right side
285,206.73x = 61,459,766,871.41 - Step 5: Solve for x
x = 61,459,766,871.41/285,206.73 - Step 6: Final answer
x = 215,491.99
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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.