Finding the Fourth Proportional to 217,281,235.80, 325,921,853.70 and 115,244,563.80
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Solution
The fourth proportional to 217,281,235.80, 325,921,853.70 and 115,244,563.80 is: 172,866,845.70
Step by Step Solution
- Step 1: Write the proportion equation
217,281,235.80 : 325,921,853.70 = 115,244,563.80 : x - Step 2: Convert to fraction form
217,281,235.80/325,921,853.70 = 115,244,563.80/x - Step 3: Cross multiply
217,281,235.80x = 325,921,853.70 × 115,244,563.80 - Step 4: Simplify right side
217,281,235.80x = 37,560,721,862,543,912 - Step 5: Solve for x
x = 37,560,721,862,543,912/217,281,235.80 - Step 6: Final answer
x = 172,866,845.70
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1.5x scale
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.