Finding the Fourth Proportional to 228,690.25, 315,588.48 and 126,713.68
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Solution
The fourth proportional to 228,690.25, 315,588.48 and 126,713.68 is: 174,862.63
Step by Step Solution
- Step 1: Write the proportion equation
228,690.25 : 315,588.48 = 126,713.68 : x - Step 2: Convert to fraction form
228,690.25/315,588.48 = 126,713.68/x - Step 3: Cross multiply
228,690.25x = 315,588.48 × 126,713.68 - Step 4: Simplify right side
228,690.25x = 39,989,377,666.41 - Step 5: Solve for x
x = 39,989,377,666.41/228,690.25 - Step 6: Final answer
x = 174,862.63
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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.