Finding the Fourth Proportional to 291,499.23, 399,646.93 and 286,185.63
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Solution
The fourth proportional to 291,499.23, 399,646.93 and 286,185.63 is: 392,361.95
Step by Step Solution
- Step 1: Write the proportion equation
291,499.23 : 399,646.93 = 286,185.63 : x - Step 2: Convert to fraction form
291,499.23/399,646.93 = 286,185.63/x - Step 3: Cross multiply
291,499.23x = 399,646.93 × 286,185.63 - Step 4: Simplify right side
291,499.23x = 114,373,207,724.15 - Step 5: Solve for x
x = 114,373,207,724.15/291,499.23 - Step 6: Final answer
x = 392,361.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.