Finding the Fourth Proportional to 260,125.40, 389,919.72 and 126,840.98
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Solution
The fourth proportional to 260,125.40, 389,919.72 and 126,840.98 is: 190,130.60
Step by Step Solution
- Step 1: Write the proportion equation
260,125.40 : 389,919.72 = 126,840.98 : x - Step 2: Convert to fraction form
260,125.40/389,919.72 = 126,840.98/x - Step 3: Cross multiply
260,125.40x = 389,919.72 × 126,840.98 - Step 4: Simplify right side
260,125.40x = 49,457,799,406.13 - Step 5: Solve for x
x = 49,457,799,406.13/260,125.40 - Step 6: Final answer
x = 190,130.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.