Finding the Fourth Proportional to 354,588.40, 531,811.08 and 129,872.10
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Solution
The fourth proportional to 354,588.40, 531,811.08 and 129,872.10 is: 194,781.95
Step by Step Solution
- Step 1: Write the proportion equation
354,588.40 : 531,811.08 = 129,872.10 : x - Step 2: Convert to fraction form
354,588.40/531,811.08 = 129,872.10/x - Step 3: Cross multiply
354,588.40x = 531,811.08 × 129,872.10 - Step 4: Simplify right side
354,588.40x = 69,067,421,762.87 - Step 5: Solve for x
x = 69,067,421,762.87/354,588.40 - Step 6: Final answer
x = 194,781.95
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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.