Finding the Fourth Proportional to 253,930.09, 350,421.28 and 139,206.65
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Solution
The fourth proportional to 253,930.09, 350,421.28 and 139,206.65 is: 192,103.94
Step by Step Solution
- Step 1: Write the proportion equation
253,930.09 : 350,421.28 = 139,206.65 : x - Step 2: Convert to fraction form
253,930.09/350,421.28 = 139,206.65/x - Step 3: Cross multiply
253,930.09x = 350,421.28 × 139,206.65 - Step 4: Simplify right side
253,930.09x = 48,780,971,848.97 - Step 5: Solve for x
x = 48,780,971,848.97/253,930.09 - Step 6: Final answer
x = 192,103.94
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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.