Finding the Fourth Proportional to 373,438,763.19, 515,390,683.20 and 212,541,866.42
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Solution
The fourth proportional to 373,438,763.19, 515,390,683.20 and 212,541,866.42 is: 293,333,495.44
Step by Step Solution
- Step 1: Write the proportion equation
373,438,763.19 : 515,390,683.20 = 212,541,866.42 : x - Step 2: Convert to fraction form
373,438,763.19/515,390,683.20 = 212,541,866.42/x - Step 3: Cross multiply
373,438,763.19x = 515,390,683.20 × 212,541,866.42 - Step 4: Simplify right side
373,438,763.19x = 109,542,097,740,229,984 - Step 5: Solve for x
x = 109,542,097,740,229,984/373,438,763.19 - Step 6: Final answer
x = 293,333,495.44
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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.