Finding the Fourth Proportional to 286,989.21, 396,019.94 and 159,671.79
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Solution
The fourth proportional to 286,989.21, 396,019.94 and 159,671.79 is: 220,333.06
Step by Step Solution
- Step 1: Write the proportion equation
286,989.21 : 396,019.94 = 159,671.79 : x - Step 2: Convert to fraction form
286,989.21/396,019.94 = 159,671.79/x - Step 3: Cross multiply
286,989.21x = 396,019.94 × 159,671.79 - Step 4: Simplify right side
286,989.21x = 63,233,211,897.13 - Step 5: Solve for x
x = 63,233,211,897.13/286,989.21 - Step 6: Final answer
x = 220,333.06
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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.