Finding the Fourth Proportional to 408,253,276.80, 612,379,915.20 and 149,382,460.80
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Solution
The fourth proportional to 408,253,276.80, 612,379,915.20 and 149,382,460.80 is: 224,073,691.20
Step by Step Solution
- Step 1: Write the proportion equation
408,253,276.80 : 612,379,915.20 = 149,382,460.80 : x - Step 2: Convert to fraction form
408,253,276.80/612,379,915.20 = 149,382,460.80/x - Step 3: Cross multiply
408,253,276.80x = 612,379,915.20 × 149,382,460.80 - Step 4: Simplify right side
408,253,276.80x = 91,478,818,677,071,344 - Step 5: Solve for x
x = 91,478,818,677,071,344/408,253,276.80 - Step 6: Final answer
x = 224,073,691.20
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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.