Finding the Fourth Proportional to 278,368.20, 384,143.08 and 169,433.08
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Solution
The fourth proportional to 278,368.20, 384,143.08 and 169,433.08 is: 233,814.59
Step by Step Solution
- Step 1: Write the proportion equation
278,368.20 : 384,143.08 = 169,433.08 : x - Step 2: Convert to fraction form
278,368.20/384,143.08 = 169,433.08/x - Step 3: Cross multiply
278,368.20x = 384,143.08 × 169,433.08 - Step 4: Simplify right side
278,368.20x = 65,086,545,205.09 - Step 5: Solve for x
x = 65,086,545,205.09/278,368.20 - Step 6: Final answer
x = 233,814.59
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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.