Finding the Fourth Proportional to 387,855.54, 535,175.40 and 215,750.79
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Solution
The fourth proportional to 387,855.54, 535,175.40 and 215,750.79 is: 297,699.80
Step by Step Solution
- Step 1: Write the proportion equation
387,855.54 : 535,175.40 = 215,750.79 : x - Step 2: Convert to fraction form
387,855.54/535,175.40 = 215,750.79/x - Step 3: Cross multiply
387,855.54x = 535,175.40 × 215,750.79 - Step 4: Simplify right side
387,855.54x = 115,464,516,147.63 - Step 5: Solve for x
x = 115,464,516,147.63/387,855.54 - Step 6: Final answer
x = 297,699.80
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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.