Finding the Fourth Proportional to 215,919.99, 297,970.11 and 120,432.87
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Solution
The fourth proportional to 215,919.99, 297,970.11 and 120,432.87 is: 166,197.65
Step by Step Solution
- Step 1: Write the proportion equation
215,919.99 : 297,970.11 = 120,432.87 : x - Step 2: Convert to fraction form
215,919.99/297,970.11 = 120,432.87/x - Step 3: Cross multiply
215,919.99x = 297,970.11 × 120,432.87 - Step 4: Simplify right side
215,919.99x = 35,885,395,521.52 - Step 5: Solve for x
x = 35,885,395,521.52/215,919.99 - Step 6: Final answer
x = 166,197.65
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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.