Finding the Fourth Proportional to 228,788.24, 315,727.56 and 128,186.96
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Solution
The fourth proportional to 228,788.24, 315,727.56 and 128,186.96 is: 176,897.89
Step by Step Solution
- Step 1: Write the proportion equation
228,788.24 : 315,727.56 = 128,186.96 : x - Step 2: Convert to fraction form
228,788.24/315,727.56 = 128,186.96/x - Step 3: Cross multiply
228,788.24x = 315,727.56 × 128,186.96 - Step 4: Simplify right side
228,788.24x = 40,472,156,104.62 - Step 5: Solve for x
x = 40,472,156,104.62/228,788.24 - Step 6: Final answer
x = 176,897.89
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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.