Finding the Fourth Proportional to 407,831.40, 611,747.10 and 266,113.80
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Solution
The fourth proportional to 407,831.40, 611,747.10 and 266,113.80 is: 399,170.70
Step by Step Solution
- Step 1: Write the proportion equation
407,831.40 : 611,747.10 = 266,113.80 : x - Step 2: Convert to fraction form
407,831.40/611,747.10 = 266,113.80/x - Step 3: Cross multiply
407,831.40x = 611,747.10 × 266,113.80 - Step 4: Simplify right side
407,831.40x = 162,794,345,419.98 - Step 5: Solve for x
x = 162,794,345,419.98/407,831.40 - Step 6: Final answer
x = 399,170.70
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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.