Finding the Fourth Proportional to 261,505,128.70, 392,257,693.05 and 170,805,864.70
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Solution
The fourth proportional to 261,505,128.70, 392,257,693.05 and 170,805,864.70 is: 256,208,797.05
Step by Step Solution
- Step 1: Write the proportion equation
261,505,128.70 : 392,257,693.05 = 170,805,864.70 : x - Step 2: Convert to fraction form
261,505,128.70/392,257,693.05 = 170,805,864.70/x - Step 3: Cross multiply
261,505,128.70x = 392,257,693.05 × 170,805,864.70 - Step 4: Simplify right side
261,505,128.70x = 66,999,914,446,632,424 - Step 5: Solve for x
x = 66,999,914,446,632,424/261,505,128.70 - Step 6: Final answer
x = 256,208,797.05
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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.