Finding the Fourth Proportional to 228,540.21, 315,541.35 and 142,532.79
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Solution
The fourth proportional to 228,540.21, 315,541.35 and 142,532.79 is: 196,792.45
Step by Step Solution
- Step 1: Write the proportion equation
228,540.21 : 315,541.35 = 142,532.79 : x - Step 2: Convert to fraction form
228,540.21/315,541.35 = 142,532.79/x - Step 3: Cross multiply
228,540.21x = 315,541.35 × 142,532.79 - Step 4: Simplify right side
228,540.21x = 44,974,988,975.87 - Step 5: Solve for x
x = 44,974,988,975.87/228,540.21 - Step 6: Final answer
x = 196,792.45
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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.