Finding the Fourth Proportional to 217,283.10, 325,815.30 and 128,563.80
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Solution
The fourth proportional to 217,283.10, 325,815.30 and 128,563.80 is: 192,781.00
Step by Step Solution
- Step 1: Write the proportion equation
217,283.10 : 325,815.30 = 128,563.80 : x - Step 2: Convert to fraction form
217,283.10/325,815.30 = 128,563.80/x - Step 3: Cross multiply
217,283.10x = 325,815.30 × 128,563.80 - Step 4: Simplify right side
217,283.10x = 41,888,053,066.14 - Step 5: Solve for x
x = 41,888,053,066.14/217,283.10 - Step 6: Final answer
x = 192,781.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.