Finding the Fourth Proportional to 276,419.99, 381,455.12 and 155,561.21
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Solution
The fourth proportional to 276,419.99, 381,455.12 and 155,561.21 is: 214,671.95
Step by Step Solution
- Step 1: Write the proportion equation
276,419.99 : 381,455.12 = 155,561.21 : x - Step 2: Convert to fraction form
276,419.99/381,455.12 = 155,561.21/x - Step 3: Cross multiply
276,419.99x = 381,455.12 × 155,561.21 - Step 4: Simplify right side
276,419.99x = 59,339,619,939.98 - Step 5: Solve for x
x = 59,339,619,939.98/276,419.99 - Step 6: Final answer
x = 214,671.95
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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.