Finding the Fourth Proportional to 253,115.68, 349,306.68 and 139,945.72
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Solution
The fourth proportional to 253,115.68, 349,306.68 and 139,945.72 is: 193,128.99
Step by Step Solution
- Step 1: Write the proportion equation
253,115.68 : 349,306.68 = 139,945.72 : x - Step 2: Convert to fraction form
253,115.68/349,306.68 = 139,945.72/x - Step 3: Cross multiply
253,115.68x = 349,306.68 × 139,945.72 - Step 4: Simplify right side
253,115.68x = 48,883,974,833.41 - Step 5: Solve for x
x = 48,883,974,833.41/253,115.68 - Step 6: Final answer
x = 193,128.99
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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.