Finding the Fourth Proportional to 218,750.05, 328,125.08 and 78,490.45
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Solution
The fourth proportional to 218,750.05, 328,125.08 and 78,490.45 is: 117,735.68
Step by Step Solution
- Step 1: Write the proportion equation
218,750.05 : 328,125.08 = 78,490.45 : x - Step 2: Convert to fraction form
218,750.05/328,125.08 = 78,490.45/x - Step 3: Cross multiply
218,750.05x = 328,125.08 × 78,490.45 - Step 4: Simplify right side
218,750.05x = 25,754,684,793.03 - Step 5: Solve for x
x = 25,754,684,793.03/218,750.05 - Step 6: Final answer
x = 117,735.68
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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.