Finding the Fourth Proportional to 398,427,563.21, 549,830,770.91 and 222,226,915.70
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Solution
The fourth proportional to 398,427,563.21, 549,830,770.91 and 222,226,915.70 is: 306,673,552.89
Step by Step Solution
- Step 1: Write the proportion equation
398,427,563.21 : 549,830,770.91 = 222,226,915.70 : x - Step 2: Convert to fraction form
398,427,563.21/549,830,770.91 = 222,226,915.70/x - Step 3: Cross multiply
398,427,563.21x = 549,830,770.91 × 222,226,915.70 - Step 4: Simplify right side
398,427,563.21x = 122,187,196,377,379,376 - Step 5: Solve for x
x = 122,187,196,377,379,376/398,427,563.21 - Step 6: Final answer
x = 306,673,552.89
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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.