Finding the Fourth Proportional to 218,909.70, 328,364.55 and 140,177.70
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Solution
The fourth proportional to 218,909.70, 328,364.55 and 140,177.70 is: 210,266.55
Step by Step Solution
- Step 1: Write the proportion equation
218,909.70 : 328,364.55 = 140,177.70 : x - Step 2: Convert to fraction form
218,909.70/328,364.55 = 140,177.70/x - Step 3: Cross multiply
218,909.70x = 328,364.55 × 140,177.70 - Step 4: Simplify right side
218,909.70x = 46,029,387,380.54 - Step 5: Solve for x
x = 46,029,387,380.54/218,909.70 - Step 6: Final answer
x = 210,266.55
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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.