Finding the Fourth Proportional to 149,779,815.70, 209,974,857.50 and 149,779,815.70
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Solution
The fourth proportional to 149,779,815.70, 209,974,857.50 and 149,779,815.70 is: 209,974,857.50
Step by Step Solution
- Step 1: Write the proportion equation
149,779,815.70 : 209,974,857.50 = 149,779,815.70 : x - Step 2: Convert to fraction form
149,779,815.70/209,974,857.50 = 149,779,815.70/x - Step 3: Cross multiply
149,779,815.70x = 209,974,857.50 × 149,779,815.70 - Step 4: Simplify right side
149,779,815.70x = 31,449,995,457,983,760 - Step 5: Solve for x
x = 31,449,995,457,983,760/149,779,815.70 - Step 6: Final answer
x = 209,974,857.50
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.