Finding the Fourth Proportional to 207,257.20, 310,885.80 and 74,201.20
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Solution
The fourth proportional to 207,257.20, 310,885.80 and 74,201.20 is: 111,301.80
Step by Step Solution
- Step 1: Write the proportion equation
207,257.20 : 310,885.80 = 74,201.20 : x - Step 2: Convert to fraction form
207,257.20/310,885.80 = 74,201.20/x - Step 3: Cross multiply
207,257.20x = 310,885.80 × 74,201.20 - Step 4: Simplify right side
207,257.20x = 23,068,099,422.96 - Step 5: Solve for x
x = 23,068,099,422.96/207,257.20 - Step 6: Final answer
x = 111,301.80
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1.5x scale
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.