Finding the Fourth Proportional to 289,707,353.80, 434,638,013.10 and 125,874,809.80
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Solution
The fourth proportional to 289,707,353.80, 434,638,013.10 and 125,874,809.80 is: 188,845,662.75
Step by Step Solution
- Step 1: Write the proportion equation
289,707,353.80 : 434,638,013.10 = 125,874,809.80 : x - Step 2: Convert to fraction form
289,707,353.80/434,638,013.10 = 125,874,809.80/x - Step 3: Cross multiply
289,707,353.80x = 434,638,013.10 × 125,874,809.80 - Step 4: Simplify right side
289,707,353.80x = 54,709,977,230,812,408 - Step 5: Solve for x
x = 54,709,977,230,812,408/289,707,353.80 - Step 6: Final answer
x = 188,845,662.75
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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.