Finding the Fourth Proportional to 212,243,421.97, 318,430,106.30 and 108,685,949.86
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Solution
The fourth proportional to 212,243,421.97, 318,430,106.30 and 108,685,949.86 is: 163,062,196.44
Step by Step Solution
- Step 1: Write the proportion equation
212,243,421.97 : 318,430,106.30 = 108,685,949.86 : x - Step 2: Convert to fraction form
212,243,421.97/318,430,106.30 = 108,685,949.86/x - Step 3: Cross multiply
212,243,421.97x = 318,430,106.30 × 108,685,949.86 - Step 4: Simplify right side
212,243,421.97x = 34,608,878,567,236,272 - Step 5: Solve for x
x = 34,608,878,567,236,272/212,243,421.97 - Step 6: Final answer
x = 163,062,196.44
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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.