Finding the Fourth Proportional to 306,355.98, 422,655.28 and 190,015.63
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Solution
The fourth proportional to 306,355.98, 422,655.28 and 190,015.63 is: 262,149.64
Step by Step Solution
- Step 1: Write the proportion equation
306,355.98 : 422,655.28 = 190,015.63 : x - Step 2: Convert to fraction form
306,355.98/422,655.28 = 190,015.63/x - Step 3: Cross multiply
306,355.98x = 422,655.28 × 190,015.63 - Step 4: Simplify right side
306,355.98x = 80,311,108,826.99 - Step 5: Solve for x
x = 80,311,108,826.99/306,355.98 - Step 6: Final answer
x = 262,149.64
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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.