Finding the Fourth Proportional to 243,638.24, 336,228.18 and 136,212.80
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Solution
The fourth proportional to 243,638.24, 336,228.18 and 136,212.80 is: 187,977.81
Step by Step Solution
- Step 1: Write the proportion equation
243,638.24 : 336,228.18 = 136,212.80 : x - Step 2: Convert to fraction form
243,638.24/336,228.18 = 136,212.80/x - Step 3: Cross multiply
243,638.24x = 336,228.18 × 136,212.80 - Step 4: Simplify right side
243,638.24x = 45,798,581,836.70 - Step 5: Solve for x
x = 45,798,581,836.70/243,638.24 - Step 6: Final answer
x = 187,977.81
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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.