Finding the Fourth Proportional to 258,197.38, 356,305.26 and 143,473.06
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Solution
The fourth proportional to 258,197.38, 356,305.26 and 143,473.06 is: 197,988.86
Step by Step Solution
- Step 1: Write the proportion equation
258,197.38 : 356,305.26 = 143,473.06 : x - Step 2: Convert to fraction form
258,197.38/356,305.26 = 143,473.06/x - Step 3: Cross multiply
258,197.38x = 356,305.26 × 143,473.06 - Step 4: Simplify right side
258,197.38x = 51,120,205,946.30 - Step 5: Solve for x
x = 51,120,205,946.30/258,197.38 - Step 6: Final answer
x = 197,988.86
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.