Finding the Fourth Proportional to 228,735.06, 315,654.42 and 128,133.06
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Solution
The fourth proportional to 228,735.06, 315,654.42 and 128,133.06 is: 176,823.64
Step by Step Solution
- Step 1: Write the proportion equation
228,735.06 : 315,654.42 = 128,133.06 : x - Step 2: Convert to fraction form
228,735.06/315,654.42 = 128,133.06/x - Step 3: Cross multiply
228,735.06x = 315,654.42 × 128,133.06 - Step 4: Simplify right side
228,735.06x = 40,445,766,737.13 - Step 5: Solve for x
x = 40,445,766,737.13/228,735.06 - Step 6: Final answer
x = 176,823.64
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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.