Finding the Fourth Proportional to 251,616.12, 347,235.54 and 138,439.08
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Solution
The fourth proportional to 251,616.12, 347,235.54 and 138,439.08 is: 191,048.84
Step by Step Solution
- Step 1: Write the proportion equation
251,616.12 : 347,235.54 = 138,439.08 : x - Step 2: Convert to fraction form
251,616.12/347,235.54 = 138,439.08/x - Step 3: Cross multiply
251,616.12x = 347,235.54 × 138,439.08 - Step 4: Simplify right side
251,616.12x = 48,070,968,700.90 - Step 5: Solve for x
x = 48,070,968,700.90/251,616.12 - Step 6: Final answer
x = 191,048.84
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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.