Finding the Fourth Proportional to 387,263.10, 534,437.82 and 215,193.84
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Solution
The fourth proportional to 387,263.10, 534,437.82 and 215,193.84 is: 296,975.69
Step by Step Solution
- Step 1: Write the proportion equation
387,263.10 : 534,437.82 = 215,193.84 : x - Step 2: Convert to fraction form
387,263.10/534,437.82 = 215,193.84/x - Step 3: Cross multiply
387,263.10x = 534,437.82 × 215,193.84 - Step 4: Simplify right side
387,263.10x = 115,007,726,727.03 - Step 5: Solve for x
x = 115,007,726,727.03/387,263.10 - Step 6: Final answer
x = 296,975.69
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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.