Finding the Fourth Proportional to 285,080.91, 393,391.04 and 157,758.63
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Solution
The fourth proportional to 285,080.91, 393,391.04 and 157,758.63 is: 217,695.50
Step by Step Solution
- Step 1: Write the proportion equation
285,080.91 : 393,391.04 = 157,758.63 : x - Step 2: Convert to fraction form
285,080.91/393,391.04 = 157,758.63/x - Step 3: Cross multiply
285,080.91x = 393,391.04 × 157,758.63 - Step 4: Simplify right side
285,080.91x = 62,060,831,524.68 - Step 5: Solve for x
x = 62,060,831,524.68/285,080.91 - Step 6: Final answer
x = 217,695.50
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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.