Finding the Fourth Proportional to 245,630.51, 368,328.97 and 85,687.00
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Solution
The fourth proportional to 245,630.51, 368,328.97 and 85,687.00 is: 128,489.75
Step by Step Solution
- Step 1: Write the proportion equation
245,630.51 : 368,328.97 = 85,687.00 : x - Step 2: Convert to fraction form
245,630.51/368,328.97 = 85,687.00/x - Step 3: Cross multiply
245,630.51x = 368,328.97 × 85,687.00 - Step 4: Simplify right side
245,630.51x = 31,561,003,638.68 - Step 5: Solve for x
x = 31,561,003,638.68/245,630.51 - Step 6: Final answer
x = 128,489.75
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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.