Finding the Fourth Proportional to 213,177,400.80, 319,340,948.40 and 122,194,701.60
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Solution
The fourth proportional to 213,177,400.80, 319,340,948.40 and 122,194,701.60 is: 183,048,351.99
Step by Step Solution
- Step 1: Write the proportion equation
213,177,400.80 : 319,340,948.40 = 122,194,701.60 : x - Step 2: Convert to fraction form
213,177,400.80/319,340,948.40 = 122,194,701.60/x - Step 3: Cross multiply
213,177,400.80x = 319,340,948.40 × 122,194,701.60 - Step 4: Simplify right side
213,177,400.80x = 39,021,771,898,398,992 - Step 5: Solve for x
x = 39,021,771,898,398,992/213,177,400.80 - Step 6: Final answer
x = 183,048,351.99
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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.