Finding the Fourth Proportional to 212,903.21, 293,463.77 and 155,451.44
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Solution
The fourth proportional to 212,903.21, 293,463.77 and 155,451.44 is: 214,272.79
Step by Step Solution
- Step 1: Write the proportion equation
212,903.21 : 293,463.77 = 155,451.44 : x - Step 2: Convert to fraction form
212,903.21/293,463.77 = 155,451.44/x - Step 3: Cross multiply
212,903.21x = 293,463.77 × 155,451.44 - Step 4: Simplify right side
212,903.21x = 45,619,363,389.75 - Step 5: Solve for x
x = 45,619,363,389.75/212,903.21 - Step 6: Final answer
x = 214,272.79
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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.