Finding the Fourth Proportional to 231,534.15, 319,415.70 and 135,997.79
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Solution
The fourth proportional to 231,534.15, 319,415.70 and 135,997.79 is: 187,617.37
Step by Step Solution
- Step 1: Write the proportion equation
231,534.15 : 319,415.70 = 135,997.79 : x - Step 2: Convert to fraction form
231,534.15/319,415.70 = 135,997.79/x - Step 3: Cross multiply
231,534.15x = 319,415.70 × 135,997.79 - Step 4: Simplify right side
231,534.15x = 43,439,828,204.22 - Step 5: Solve for x
x = 43,439,828,204.22/231,534.15 - Step 6: Final answer
x = 187,617.37
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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.