Finding the Fourth Proportional to 211,523.31, 291,737.19 and 130,995.54
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Solution
The fourth proportional to 211,523.31, 291,737.19 and 130,995.54 is: 180,671.68
Step by Step Solution
- Step 1: Write the proportion equation
211,523.31 : 291,737.19 = 130,995.54 : x - Step 2: Convert to fraction form
211,523.31/291,737.19 = 130,995.54/x - Step 3: Cross multiply
211,523.31x = 291,737.19 × 130,995.54 - Step 4: Simplify right side
211,523.31x = 38,216,270,742.13 - Step 5: Solve for x
x = 38,216,270,742.13/211,523.31 - Step 6: Final answer
x = 180,671.68
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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.