Finding the Fourth Proportional to 641,121.30, 961,681.95 and 267,095.70
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Solution
The fourth proportional to 641,121.30, 961,681.95 and 267,095.70 is: 400,643.55
Step by Step Solution
- Step 1: Write the proportion equation
641,121.30 : 961,681.95 = 267,095.70 : x - Step 2: Convert to fraction form
641,121.30/961,681.95 = 267,095.70/x - Step 3: Cross multiply
641,121.30x = 961,681.95 × 267,095.70 - Step 4: Simplify right side
641,121.30x = 256,861,113,612.62 - Step 5: Solve for x
x = 256,861,113,612.62/641,121.30 - Step 6: Final answer
x = 400,643.55
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Similar ratio
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1.5x scale
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.