Finding the Fourth Proportional to 677,430.21, 1,016,145.75 and 172,029.09
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Solution
The fourth proportional to 677,430.21, 1,016,145.75 and 172,029.09 is: 258,043.75
Step by Step Solution
- Step 1: Write the proportion equation
677,430.21 : 1,016,145.75 = 172,029.09 : x - Step 2: Convert to fraction form
677,430.21/1,016,145.75 = 172,029.09/x - Step 3: Cross multiply
677,430.21x = 1,016,145.75 × 172,029.09 - Step 4: Simplify right side
677,430.21x = 174,806,628,679.87 - Step 5: Solve for x
x = 174,806,628,679.87/677,430.21 - Step 6: Final answer
x = 258,043.75
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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.