Finding the Fourth Proportional to 289,193.76, 399,089.36 and 168,405.44
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Solution
The fourth proportional to 289,193.76, 399,089.36 and 168,405.44 is: 232,400.66
Step by Step Solution
- Step 1: Write the proportion equation
289,193.76 : 399,089.36 = 168,405.44 : x - Step 2: Convert to fraction form
289,193.76/399,089.36 = 168,405.44/x - Step 3: Cross multiply
289,193.76x = 399,089.36 × 168,405.44 - Step 4: Simplify right side
289,193.76x = 67,208,819,270.12 - Step 5: Solve for x
x = 67,208,819,270.12/289,193.76 - Step 6: Final answer
x = 232,400.66
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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.