Finding the Fourth Proportional to 455,095.80, 682,643.70 and 139,511.70
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Solution
The fourth proportional to 455,095.80, 682,643.70 and 139,511.70 is: 209,267.55
Step by Step Solution
- Step 1: Write the proportion equation
455,095.80 : 682,643.70 = 139,511.70 : x - Step 2: Convert to fraction form
455,095.80/682,643.70 = 139,511.70/x - Step 3: Cross multiply
455,095.80x = 682,643.70 × 139,511.70 - Step 4: Simplify right side
455,095.80x = 95,236,783,081.29 - Step 5: Solve for x
x = 95,236,783,081.29/455,095.80 - Step 6: Final answer
x = 209,267.55
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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.