Finding the Fourth Proportional to 328,543,419.70, 492,783,102.15 and 86,206,323.70
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Solution
The fourth proportional to 328,543,419.70, 492,783,102.15 and 86,206,323.70 is: 129,301,081.90
Step by Step Solution
- Step 1: Write the proportion equation
328,543,419.70 : 492,783,102.15 = 86,206,323.70 : x - Step 2: Convert to fraction form
328,543,419.70/492,783,102.15 = 86,206,323.70/x - Step 3: Cross multiply
328,543,419.70x = 492,783,102.15 × 86,206,323.70 - Step 4: Simplify right side
328,543,419.70x = 42,481,019,617,833,064 - Step 5: Solve for x
x = 42,481,019,617,833,064/328,543,419.70 - Step 6: Final answer
x = 129,301,081.90
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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.