Finding the Fourth Proportional to 285,005.24, 393,292.84 and 155,940.92
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Solution
The fourth proportional to 285,005.24, 393,292.84 and 155,940.92 is: 215,190.60
Step by Step Solution
- Step 1: Write the proportion equation
285,005.24 : 393,292.84 = 155,940.92 : x - Step 2: Convert to fraction form
285,005.24/393,292.84 = 155,940.92/x - Step 3: Cross multiply
285,005.24x = 393,292.84 × 155,940.92 - Step 4: Simplify right side
285,005.24x = 61,330,447,299.01 - Step 5: Solve for x
x = 61,330,447,299.01/285,005.24 - Step 6: Final answer
x = 215,190.60
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1.5x scale
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.