Finding the Fourth Proportional to 412,185.36, 618,366.21 and 127,869.74
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Solution
The fourth proportional to 412,185.36, 618,366.21 and 127,869.74 is: 191,831.95
Step by Step Solution
- Step 1: Write the proportion equation
412,185.36 : 618,366.21 = 127,869.74 : x - Step 2: Convert to fraction form
412,185.36/618,366.21 = 127,869.74/x - Step 3: Cross multiply
412,185.36x = 618,366.21 × 127,869.74 - Step 4: Simplify right side
412,185.36x = 79,070,323,405.65 - Step 5: Solve for x
x = 79,070,323,405.65/412,185.36 - Step 6: Final answer
x = 191,831.95
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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.