Finding the Fourth Proportional to 251,690.44, 347,335.26 and 138,515.80
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Solution
The fourth proportional to 251,690.44, 347,335.26 and 138,515.80 is: 191,153.15
Step by Step Solution
- Step 1: Write the proportion equation
251,690.44 : 347,335.26 = 138,515.80 : x - Step 2: Convert to fraction form
251,690.44/347,335.26 = 138,515.80/x - Step 3: Cross multiply
251,690.44x = 347,335.26 × 138,515.80 - Step 4: Simplify right side
251,690.44x = 48,111,421,407.11 - Step 5: Solve for x
x = 48,111,421,407.11/251,690.44 - Step 6: Final answer
x = 191,153.15
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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.