Finding the Fourth Proportional to 282,485.10, 389,831.76 and 155,163.54
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Solution
The fourth proportional to 282,485.10, 389,831.76 and 155,163.54 is: 214,126.96
Step by Step Solution
- Step 1: Write the proportion equation
282,485.10 : 389,831.76 = 155,163.54 : x - Step 2: Convert to fraction form
282,485.10/389,831.76 = 155,163.54/x - Step 3: Cross multiply
282,485.10x = 389,831.76 × 155,163.54 - Step 4: Simplify right side
282,485.10x = 60,487,675,886.03 - Step 5: Solve for x
x = 60,487,675,886.03/282,485.10 - Step 6: Final answer
x = 214,126.96
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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.