Finding the Fourth Proportional to 258,564.70, 387,847.05 and 81,086.02
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Solution
The fourth proportional to 258,564.70, 387,847.05 and 81,086.02 is: 121,629.03
Step by Step Solution
- Step 1: Write the proportion equation
258,564.70 : 387,847.05 = 81,086.02 : x - Step 2: Convert to fraction form
258,564.70/387,847.05 = 81,086.02/x - Step 3: Cross multiply
258,564.70x = 387,847.05 × 81,086.02 - Step 4: Simplify right side
258,564.70x = 31,448,973,653.24 - Step 5: Solve for x
x = 31,448,973,653.24/258,564.70 - Step 6: Final answer
x = 121,629.03
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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.