Finding the Fourth Proportional to 211,014.18, 291,120.08 and 138,457.13
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Solution
The fourth proportional to 211,014.18, 291,120.08 and 138,457.13 is: 191,018.67
Step by Step Solution
- Step 1: Write the proportion equation
211,014.18 : 291,120.08 = 138,457.13 : x - Step 2: Convert to fraction form
211,014.18/291,120.08 = 138,457.13/x - Step 3: Cross multiply
211,014.18x = 291,120.08 × 138,457.13 - Step 4: Simplify right side
211,014.18x = 40,307,648,614.28 - Step 5: Solve for x
x = 40,307,648,614.28/211,014.18 - Step 6: Final answer
x = 191,018.67
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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.