Finding the Fourth Proportional to 387,271.49, 534,433.37 and 215,188.74
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Solution
The fourth proportional to 387,271.49, 534,433.37 and 215,188.74 is: 296,959.75
Step by Step Solution
- Step 1: Write the proportion equation
387,271.49 : 534,433.37 = 215,188.74 : x - Step 2: Convert to fraction form
387,271.49/534,433.37 = 215,188.74/x - Step 3: Cross multiply
387,271.49x = 534,433.37 × 215,188.74 - Step 4: Simplify right side
387,271.49x = 115,004,042,428.31 - Step 5: Solve for x
x = 115,004,042,428.31/387,271.49 - Step 6: Final answer
x = 296,959.75
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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.