Finding the Fourth Proportional to 251,988.64, 347,745.18 and 138,811.12
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Solution
The fourth proportional to 251,988.64, 347,745.18 and 138,811.12 is: 191,559.82
Step by Step Solution
- Step 1: Write the proportion equation
251,988.64 : 347,745.18 = 138,811.12 : x - Step 2: Convert to fraction form
251,988.64/347,745.18 = 138,811.12/x - Step 3: Cross multiply
251,988.64x = 347,745.18 × 138,811.12 - Step 4: Simplify right side
251,988.64x = 48,270,897,910.40 - Step 5: Solve for x
x = 48,270,897,910.40/251,988.64 - Step 6: Final answer
x = 191,559.82
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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.