Finding the Fourth Proportional to 305,902.96, 458,831.76 and 128,402.80
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Solution
The fourth proportional to 305,902.96, 458,831.76 and 128,402.80 is: 192,594.68
Step by Step Solution
- Step 1: Write the proportion equation
305,902.96 : 458,831.76 = 128,402.80 : x - Step 2: Convert to fraction form
305,902.96/458,831.76 = 128,402.80/x - Step 3: Cross multiply
305,902.96x = 458,831.76 × 128,402.80 - Step 4: Simplify right side
305,902.96x = 58,915,282,712.93 - Step 5: Solve for x
x = 58,915,282,712.93/305,902.96 - Step 6: Final answer
x = 192,594.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.