Finding the Fourth Proportional to 385,214.40, 577,864.80 and 118,972.80
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Solution
The fourth proportional to 385,214.40, 577,864.80 and 118,972.80 is: 178,472.54
Step by Step Solution
- Step 1: Write the proportion equation
385,214.40 : 577,864.80 = 118,972.80 : x - Step 2: Convert to fraction form
385,214.40/577,864.80 = 118,972.80/x - Step 3: Cross multiply
385,214.40x = 577,864.80 × 118,972.80 - Step 4: Simplify right side
385,214.40x = 68,750,193,277.44 - Step 5: Solve for x
x = 68,750,193,277.44/385,214.40 - Step 6: Final answer
x = 178,472.54
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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.