Finding the Fourth Proportional to 272,573,862.30, 408,860,793.45 and 126,959,028.30
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Solution
The fourth proportional to 272,573,862.30, 408,860,793.45 and 126,959,028.30 is: 190,438,542.45
Step by Step Solution
- Step 1: Write the proportion equation
272,573,862.30 : 408,860,793.45 = 126,959,028.30 : x - Step 2: Convert to fraction form
272,573,862.30/408,860,793.45 = 126,959,028.30/x - Step 3: Cross multiply
272,573,862.30x = 408,860,793.45 × 126,959,028.30 - Step 4: Simplify right side
272,573,862.30x = 51,908,569,046,379,000 - Step 5: Solve for x
x = 51,908,569,046,379,000/272,573,862.30 - Step 6: Final answer
x = 190,438,542.45
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1.5x scale
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.