Finding the Fourth Proportional to 268,434,121.72, 370,433,281.82 and 155,408,379.93
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Solution
The fourth proportional to 268,434,121.72, 370,433,281.82 and 155,408,379.93 is: 214,460,202.87
Step by Step Solution
- Step 1: Write the proportion equation
268,434,121.72 : 370,433,281.82 = 155,408,379.93 : x - Step 2: Convert to fraction form
268,434,121.72/370,433,281.82 = 155,408,379.93/x - Step 3: Cross multiply
268,434,121.72x = 370,433,281.82 × 155,408,379.93 - Step 4: Simplify right side
268,434,121.72x = 57,568,436,201,385,200 - Step 5: Solve for x
x = 57,568,436,201,385,200/268,434,121.72 - Step 6: Final answer
x = 214,460,202.87
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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.