Finding the Fourth Proportional to 243,639.49, 336,229.91 and 136,214.05
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Solution
The fourth proportional to 243,639.49, 336,229.91 and 136,214.05 is: 187,979.53
Step by Step Solution
- Step 1: Write the proportion equation
243,639.49 : 336,229.91 = 136,214.05 : x - Step 2: Convert to fraction form
243,639.49/336,229.91 = 136,214.05/x - Step 3: Cross multiply
243,639.49x = 336,229.91 × 136,214.05 - Step 4: Simplify right side
243,639.49x = 45,799,237,772.24 - Step 5: Solve for x
x = 45,799,237,772.24/243,639.49 - Step 6: Final answer
x = 187,979.53
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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.