Finding the Fourth Proportional to 285,079.91, 393,389.66 and 157,757.63
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Solution
The fourth proportional to 285,079.91, 393,389.66 and 157,757.63 is: 217,694.12
Step by Step Solution
- Step 1: Write the proportion equation
285,079.91 : 393,389.66 = 157,757.63 : x - Step 2: Convert to fraction form
285,079.91/393,389.66 = 157,757.63/x - Step 3: Cross multiply
285,079.91x = 393,389.66 × 157,757.63 - Step 4: Simplify right side
285,079.91x = 62,060,218,855.55 - Step 5: Solve for x
x = 62,060,218,855.55/285,079.91 - Step 6: Final answer
x = 217,694.12
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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.