Finding the Fourth Proportional to 248,831,421.49, 343,387,576.97 and 138,823,157.17
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Solution
The fourth proportional to 248,831,421.49, 343,387,576.97 and 138,823,157.17 is: 191,576,077.02
Step by Step Solution
- Step 1: Write the proportion equation
248,831,421.49 : 343,387,576.97 = 138,823,157.17 : x - Step 2: Convert to fraction form
248,831,421.49/343,387,576.97 = 138,823,157.17/x - Step 3: Cross multiply
248,831,421.49x = 343,387,576.97 × 138,823,157.17 - Step 4: Simplify right side
248,831,421.49x = 47,670,147,567,931,784 - Step 5: Solve for x
x = 47,670,147,567,931,784/248,831,421.49 - Step 6: Final answer
x = 191,576,077.02
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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.