Finding the Fourth Proportional to 211,509.12, 291,877.44 and 136,057.44
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Solution
The fourth proportional to 211,509.12, 291,877.44 and 136,057.44 is: 187,755.96
Step by Step Solution
- Step 1: Write the proportion equation
211,509.12 : 291,877.44 = 136,057.44 : x - Step 2: Convert to fraction form
211,509.12/291,877.44 = 136,057.44/x - Step 3: Cross multiply
211,509.12x = 291,877.44 × 136,057.44 - Step 4: Simplify right side
211,509.12x = 39,712,097,280.15 - Step 5: Solve for x
x = 39,712,097,280.15/211,509.12 - Step 6: Final answer
x = 187,755.96
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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.