Finding the Fourth Proportional to 298,278,563.67, 447,390,239.58 and 140,675,440.75
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Solution
The fourth proportional to 298,278,563.67, 447,390,239.58 and 140,675,440.75 is: 211,000,141.49
Step by Step Solution
- Step 1: Write the proportion equation
298,278,563.67 : 447,390,239.58 = 140,675,440.75 : x - Step 2: Convert to fraction form
298,278,563.67/447,390,239.58 = 140,675,440.75/x - Step 3: Cross multiply
298,278,563.67x = 447,390,239.58 × 140,675,440.75 - Step 4: Simplify right side
298,278,563.67x = 62,936,819,139,046,120 - Step 5: Solve for x
x = 62,936,819,139,046,120/298,278,563.67 - Step 6: Final answer
x = 211,000,141.49
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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.