Finding the Fourth Proportional to 276,354.11, 381,376.12 and 155,499.68
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Solution
The fourth proportional to 276,354.11, 381,376.12 and 155,499.68 is: 214,593.75
Step by Step Solution
- Step 1: Write the proportion equation
276,354.11 : 381,376.12 = 155,499.68 : x - Step 2: Convert to fraction form
276,354.11/381,376.12 = 155,499.68/x - Step 3: Cross multiply
276,354.11x = 381,376.12 × 155,499.68 - Step 4: Simplify right side
276,354.11x = 59,303,865,913.24 - Step 5: Solve for x
x = 59,303,865,913.24/276,354.11 - Step 6: Final answer
x = 214,593.75
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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.