Finding the Fourth Proportional to 355,909.32, 491,106.30 and 212,638.92
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Solution
The fourth proportional to 355,909.32, 491,106.30 and 212,638.92 is: 293,412.70
Step by Step Solution
- Step 1: Write the proportion equation
355,909.32 : 491,106.30 = 212,638.92 : x - Step 2: Convert to fraction form
355,909.32/491,106.30 = 212,638.92/x - Step 3: Cross multiply
355,909.32x = 491,106.30 × 212,638.92 - Step 4: Simplify right side
355,909.32x = 104,428,313,237.20 - Step 5: Solve for x
x = 104,428,313,237.20/355,909.32 - Step 6: Final answer
x = 293,412.70
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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.