Finding the Fourth Proportional to 289,419.84, 399,395.88 and 168,580.80
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Solution
The fourth proportional to 289,419.84, 399,395.88 and 168,580.80 is: 232,639.47
Step by Step Solution
- Step 1: Write the proportion equation
289,419.84 : 399,395.88 = 168,580.80 : x - Step 2: Convert to fraction form
289,419.84/399,395.88 = 168,580.80/x - Step 3: Cross multiply
289,419.84x = 399,395.88 × 168,580.80 - Step 4: Simplify right side
289,419.84x = 67,330,476,967.10 - Step 5: Solve for x
x = 67,330,476,967.10/289,419.84 - Step 6: Final answer
x = 232,639.47
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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.