Finding the Fourth Proportional to 445,454.20, 668,181.27 and 129,911.08
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Solution
The fourth proportional to 445,454.20, 668,181.27 and 129,911.08 is: 194,866.61
Step by Step Solution
- Step 1: Write the proportion equation
445,454.20 : 668,181.27 = 129,911.08 : x - Step 2: Convert to fraction form
445,454.20/668,181.27 = 129,911.08/x - Step 3: Cross multiply
445,454.20x = 668,181.27 × 129,911.08 - Step 4: Simplify right side
445,454.20x = 86,804,150,421.47 - Step 5: Solve for x
x = 86,804,150,421.47/445,454.20 - Step 6: Final answer
x = 194,866.61
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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.