Finding the Fourth Proportional to 320,682.70, 442,511.99 and 217,106.20
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Solution
The fourth proportional to 320,682.70, 442,511.99 and 217,106.20 is: 299,586.15
Step by Step Solution
- Step 1: Write the proportion equation
320,682.70 : 442,511.99 = 217,106.20 : x - Step 2: Convert to fraction form
320,682.70/442,511.99 = 217,106.20/x - Step 3: Cross multiply
320,682.70x = 442,511.99 × 217,106.20 - Step 4: Simplify right side
320,682.70x = 96,072,095,029.92 - Step 5: Solve for x
x = 96,072,095,029.92/320,682.70 - Step 6: Final answer
x = 299,586.15
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1.5x scale
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.