Finding the Fourth Proportional to 268,643.70, 402,965.55 and 189,911.70
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Solution
The fourth proportional to 268,643.70, 402,965.55 and 189,911.70 is: 284,867.55
Step by Step Solution
- Step 1: Write the proportion equation
268,643.70 : 402,965.55 = 189,911.70 : x - Step 2: Convert to fraction form
268,643.70/402,965.55 = 189,911.70/x - Step 3: Cross multiply
268,643.70x = 402,965.55 × 189,911.70 - Step 4: Simplify right side
268,643.70x = 76,527,872,641.94 - Step 5: Solve for x
x = 76,527,872,641.94/268,643.70 - Step 6: Final answer
x = 284,867.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.