Finding the Fourth Proportional to 253,102.21, 349,266.05 and 139,918.21
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Solution
The fourth proportional to 253,102.21, 349,266.05 and 139,918.21 is: 193,078.84
Step by Step Solution
- Step 1: Write the proportion equation
253,102.21 : 349,266.05 = 139,918.21 : x - Step 2: Convert to fraction form
253,102.21/349,266.05 = 139,918.21/x - Step 3: Cross multiply
253,102.21x = 349,266.05 × 139,918.21 - Step 4: Simplify right side
253,102.21x = 48,868,680,529.77 - Step 5: Solve for x
x = 48,868,680,529.77/253,102.21 - Step 6: Final answer
x = 193,078.84
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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.