Finding the Fourth Proportional to 278,391,341.76, 384,129,395.46 and 160,873,596.60
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Solution
The fourth proportional to 278,391,341.76, 384,129,395.46 and 160,873,596.60 is: 221,976,290.70
Step by Step Solution
- Step 1: Write the proportion equation
278,391,341.76 : 384,129,395.46 = 160,873,596.60 : x - Step 2: Convert to fraction form
278,391,341.76/384,129,395.46 = 160,873,596.60/x - Step 3: Cross multiply
278,391,341.76x = 384,129,395.46 × 160,873,596.60 - Step 4: Simplify right side
278,391,341.76x = 61,796,277,407,433,904 - Step 5: Solve for x
x = 61,796,277,407,433,904/278,391,341.76 - Step 6: Final answer
x = 221,976,290.70
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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.