Finding the Fourth Proportional to 280,969.40, 387,479.05 and 184,137.99
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Solution
The fourth proportional to 280,969.40, 387,479.05 and 184,137.99 is: 253,940.86
Step by Step Solution
- Step 1: Write the proportion equation
280,969.40 : 387,479.05 = 184,137.99 : x - Step 2: Convert to fraction form
280,969.40/387,479.05 = 184,137.99/x - Step 3: Cross multiply
280,969.40x = 387,479.05 × 184,137.99 - Step 4: Simplify right side
280,969.40x = 71,349,611,786.42 - Step 5: Solve for x
x = 71,349,611,786.42/280,969.40 - Step 6: Final answer
x = 253,940.86
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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.