Finding the Fourth Proportional to 290,141,570.80, 435,212,356.20 and 256,129,346.80
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Solution
The fourth proportional to 290,141,570.80, 435,212,356.20 and 256,129,346.80 is: 384,194,020.20
Step by Step Solution
- Step 1: Write the proportion equation
290,141,570.80 : 435,212,356.20 = 256,129,346.80 : x - Step 2: Convert to fraction form
290,141,570.80/435,212,356.20 = 256,129,346.80/x - Step 3: Cross multiply
290,141,570.80x = 435,212,356.20 × 256,129,346.80 - Step 4: Simplify right side
290,141,570.80x = 111,470,656,512,794,928 - Step 5: Solve for x
x = 111,470,656,512,794,928/290,141,570.80 - Step 6: Final answer
x = 384,194,020.20
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1.5x scale
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.