Finding the Fourth Proportional to 228,630.97, 315,664.71 and 142,720.75
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Solution
The fourth proportional to 228,630.97, 315,664.71 and 142,720.75 is: 197,050.75
Step by Step Solution
- Step 1: Write the proportion equation
228,630.97 : 315,664.71 = 142,720.75 : x - Step 2: Convert to fraction form
228,630.97/315,664.71 = 142,720.75/x - Step 3: Cross multiply
228,630.97x = 315,664.71 × 142,720.75 - Step 4: Simplify right side
228,630.97x = 45,051,902,581.41 - Step 5: Solve for x
x = 45,051,902,581.41/228,630.97 - Step 6: Final answer
x = 197,050.75
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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.