Finding the Fourth Proportional to 203,490.13, 305,235.19 and 78,831.13
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Solution
The fourth proportional to 203,490.13, 305,235.19 and 78,831.13 is: 118,246.69
Step by Step Solution
- Step 1: Write the proportion equation
203,490.13 : 305,235.19 = 78,831.13 : x - Step 2: Convert to fraction form
203,490.13/305,235.19 = 78,831.13/x - Step 3: Cross multiply
203,490.13x = 305,235.19 × 78,831.13 - Step 4: Simplify right side
203,490.13x = 24,062,034,943.46 - Step 5: Solve for x
x = 24,062,034,943.46/203,490.13 - Step 6: Final answer
x = 118,246.69
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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.