Finding the Fourth Proportional to 285,213.19, 393,598.87 and 156,149.51
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Solution
The fourth proportional to 285,213.19, 393,598.87 and 156,149.51 is: 215,488.88
Step by Step Solution
- Step 1: Write the proportion equation
285,213.19 : 393,598.87 = 156,149.51 : x - Step 2: Convert to fraction form
285,213.19/393,598.87 = 156,149.51/x - Step 3: Cross multiply
285,213.19x = 393,598.87 × 156,149.51 - Step 4: Simplify right side
285,213.19x = 61,460,270,687.05 - Step 5: Solve for x
x = 61,460,270,687.05/285,213.19 - Step 6: Final answer
x = 215,488.88
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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.