Finding the Fourth Proportional to 281,010,115.76, 387,798,550.80 and 153,848,672.44
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Solution
The fourth proportional to 281,010,115.76, 387,798,550.80 and 153,848,672.44 is: 212,313,681.50
Step by Step Solution
- Step 1: Write the proportion equation
281,010,115.76 : 387,798,550.80 = 153,848,672.44 : x - Step 2: Convert to fraction form
281,010,115.76/387,798,550.80 = 153,848,672.44/x - Step 3: Cross multiply
281,010,115.76x = 387,798,550.80 × 153,848,672.44 - Step 4: Simplify right side
281,010,115.76x = 59,662,292,214,735,904 - Step 5: Solve for x
x = 59,662,292,214,735,904/281,010,115.76 - Step 6: Final answer
x = 212,313,681.50
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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.