Finding the Fourth Proportional to 389,138.87, 536,929.61 and 236,257.44
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Solution
The fourth proportional to 389,138.87, 536,929.61 and 236,257.44 is: 325,985.47
Step by Step Solution
- Step 1: Write the proportion equation
389,138.87 : 536,929.61 = 236,257.44 : x - Step 2: Convert to fraction form
389,138.87/536,929.61 = 236,257.44/x - Step 3: Cross multiply
389,138.87x = 536,929.61 × 236,257.44 - Step 4: Simplify right side
389,138.87x = 126,853,613,937.51 - Step 5: Solve for x
x = 126,853,613,937.51/389,138.87 - Step 6: Final answer
x = 325,985.47
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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.