Finding the Fourth Proportional to 512,672.70, 769,009.05 and 213,053.70
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Solution
The fourth proportional to 512,672.70, 769,009.05 and 213,053.70 is: 319,580.55
Step by Step Solution
- Step 1: Write the proportion equation
512,672.70 : 769,009.05 = 213,053.70 : x - Step 2: Convert to fraction form
512,672.70/769,009.05 = 213,053.70/x - Step 3: Cross multiply
512,672.70x = 769,009.05 × 213,053.70 - Step 4: Simplify right side
512,672.70x = 163,840,223,435.99 - Step 5: Solve for x
x = 163,840,223,435.99/512,672.70 - Step 6: Final answer
x = 319,580.55
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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.