Finding the Fourth Proportional to 251,618.12, 347,238.30 and 138,441.08
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Solution
The fourth proportional to 251,618.12, 347,238.30 and 138,441.08 is: 191,051.60
Step by Step Solution
- Step 1: Write the proportion equation
251,618.12 : 347,238.30 = 138,441.08 : x - Step 2: Convert to fraction form
251,618.12/347,238.30 = 138,441.08/x - Step 3: Cross multiply
251,618.12x = 347,238.30 × 138,441.08 - Step 4: Simplify right side
251,618.12x = 48,072,045,269.36 - Step 5: Solve for x
x = 48,072,045,269.36/251,618.12 - Step 6: Final answer
x = 191,051.60
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1.5x scale
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.