Finding the Fourth Proportional to 251,613.12, 347,231.40 and 138,436.08
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Solution
The fourth proportional to 251,613.12, 347,231.40 and 138,436.08 is: 191,044.70
Step by Step Solution
- Step 1: Write the proportion equation
251,613.12 : 347,231.40 = 138,436.08 : x - Step 2: Convert to fraction form
251,613.12/347,231.40 = 138,436.08/x - Step 3: Cross multiply
251,613.12x = 347,231.40 × 138,436.08 - Step 4: Simplify right side
251,613.12x = 48,069,353,868.91 - Step 5: Solve for x
x = 48,069,353,868.91/251,613.12 - Step 6: Final answer
x = 191,044.70
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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.