Finding the Fourth Proportional to 353,913.60, 529,660.80 and 213,772.80
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Solution
The fourth proportional to 353,913.60, 529,660.80 and 213,772.80 is: 319,928.57
Step by Step Solution
- Step 1: Write the proportion equation
353,913.60 : 529,660.80 = 213,772.80 : x - Step 2: Convert to fraction form
353,913.60/529,660.80 = 213,772.80/x - Step 3: Cross multiply
353,913.60x = 529,660.80 × 213,772.80 - Step 4: Simplify right side
353,913.60x = 113,227,072,266.24 - Step 5: Solve for x
x = 113,227,072,266.24/353,913.60 - Step 6: Final answer
x = 319,928.57
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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.