Finding the Fourth Proportional to 215,457,915.13, 297,333,811.19 and 122,644,390.75
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Solution
The fourth proportional to 215,457,915.13, 297,333,811.19 and 122,644,390.75 is: 169,250,334.11
Step by Step Solution
- Step 1: Write the proportion equation
215,457,915.13 : 297,333,811.19 = 122,644,390.75 : x - Step 2: Convert to fraction form
215,457,915.13/297,333,811.19 = 122,644,390.75/x - Step 3: Cross multiply
215,457,915.13x = 297,333,811.19 × 122,644,390.75 - Step 4: Simplify right side
215,457,915.13x = 36,466,324,122,773,080 - Step 5: Solve for x
x = 36,466,324,122,773,080/215,457,915.13 - Step 6: Final answer
x = 169,250,334.11
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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.