Finding the Fourth Proportional to 216,439,821.18, 298,678,948.28 and 117,318,440.39
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Solution
The fourth proportional to 216,439,821.18, 298,678,948.28 and 117,318,440.39 is: 161,895,108.75
Step by Step Solution
- Step 1: Write the proportion equation
216,439,821.18 : 298,678,948.28 = 117,318,440.39 : x - Step 2: Convert to fraction form
216,439,821.18/298,678,948.28 = 117,318,440.39/x - Step 3: Cross multiply
216,439,821.18x = 298,678,948.28 × 117,318,440.39 - Step 4: Simplify right side
216,439,821.18x = 35,040,548,387,455,084 - Step 5: Solve for x
x = 35,040,548,387,455,084/216,439,821.18 - Step 6: Final answer
x = 161,895,108.75
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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.