Finding the Fourth Proportional to 354,347,959.61, 489,001,536.11 and 197,721,668.09
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Solution
The fourth proportional to 354,347,959.61, 489,001,536.11 and 197,721,668.09 is: 272,856,656.28
Step by Step Solution
- Step 1: Write the proportion equation
354,347,959.61 : 489,001,536.11 = 197,721,668.09 : x - Step 2: Convert to fraction form
354,347,959.61/489,001,536.11 = 197,721,668.09/x - Step 3: Cross multiply
354,347,959.61x = 489,001,536.11 × 197,721,668.09 - Step 4: Simplify right side
354,347,959.61x = 96,686,199,416,290,880 - Step 5: Solve for x
x = 96,686,199,416,290,880/354,347,959.61 - Step 6: Final answer
x = 272,856,656.28
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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.