Finding the Fourth Proportional to 387,742.91, 535,044.30 and 215,632.94
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Solution
The fourth proportional to 387,742.91, 535,044.30 and 215,632.94 is: 297,550.70
Step by Step Solution
- Step 1: Write the proportion equation
387,742.91 : 535,044.30 = 215,632.94 : x - Step 2: Convert to fraction form
387,742.91/535,044.30 = 215,632.94/x - Step 3: Cross multiply
387,742.91x = 535,044.30 × 215,632.94 - Step 4: Simplify right side
387,742.91x = 115,373,175,439.24 - Step 5: Solve for x
x = 115,373,175,439.24/387,742.91 - Step 6: Final answer
x = 297,550.70
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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.