Finding the Fourth Proportional to 211,639.77, 291,958.83 and 154,189.71
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Solution
The fourth proportional to 211,639.77, 291,958.83 and 154,189.71 is: 212,705.99
Step by Step Solution
- Step 1: Write the proportion equation
211,639.77 : 291,958.83 = 154,189.71 : x - Step 2: Convert to fraction form
211,639.77/291,958.83 = 154,189.71/x - Step 3: Cross multiply
211,639.77x = 291,958.83 × 154,189.71 - Step 4: Simplify right side
211,639.77x = 45,017,047,329.64 - Step 5: Solve for x
x = 45,017,047,329.64/211,639.77 - Step 6: Final answer
x = 212,705.99
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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.