Finding the Fourth Proportional to 373,438,759.76, 515,390,678.46 and 212,541,862.98
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Solution
The fourth proportional to 373,438,759.76, 515,390,678.46 and 212,541,862.98 is: 293,333,490.70
Step by Step Solution
- Step 1: Write the proportion equation
373,438,759.76 : 515,390,678.46 = 212,541,862.98 : x - Step 2: Convert to fraction form
373,438,759.76/515,390,678.46 = 212,541,862.98/x - Step 3: Cross multiply
373,438,759.76x = 515,390,678.46 × 212,541,862.98 - Step 4: Simplify right side
373,438,759.76x = 109,542,094,961,351,840 - Step 5: Solve for x
x = 109,542,094,961,351,840/373,438,759.76 - Step 6: Final answer
x = 293,333,490.70
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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.