Finding the Fourth Proportional to 251,705.36, 347,353.20 and 138,528.20
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Solution
The fourth proportional to 251,705.36, 347,353.20 and 138,528.20 is: 191,168.81
Step by Step Solution
- Step 1: Write the proportion equation
251,705.36 : 347,353.20 = 138,528.20 : x - Step 2: Convert to fraction form
251,705.36/347,353.20 = 138,528.20/x - Step 3: Cross multiply
251,705.36x = 347,353.20 × 138,528.20 - Step 4: Simplify right side
251,705.36x = 48,118,213,560.24 - Step 5: Solve for x
x = 48,118,213,560.24/251,705.36 - Step 6: Final answer
x = 191,168.81
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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.