Finding the Fourth Proportional to 293,163.60, 439,745.40 and 257,005.20
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Solution
The fourth proportional to 293,163.60, 439,745.40 and 257,005.20 is: 385,507.80
Step by Step Solution
- Step 1: Write the proportion equation
293,163.60 : 439,745.40 = 257,005.20 : x - Step 2: Convert to fraction form
293,163.60/439,745.40 = 257,005.20/x - Step 3: Cross multiply
293,163.60x = 439,745.40 × 257,005.20 - Step 4: Simplify right side
293,163.60x = 113,016,854,476.08 - Step 5: Solve for x
x = 113,016,854,476.08/293,163.60 - Step 6: Final answer
x = 385,507.80
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1.5x scale
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.