Finding the Fourth Proportional to 559,830.11, 839,745.78 and 139,105.99
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Solution
The fourth proportional to 559,830.11, 839,745.78 and 139,105.99 is: 208,659.13
Step by Step Solution
- Step 1: Write the proportion equation
559,830.11 : 839,745.78 = 139,105.99 : x - Step 2: Convert to fraction form
559,830.11/839,745.78 = 139,105.99/x - Step 3: Cross multiply
559,830.11x = 839,745.78 × 139,105.99 - Step 4: Simplify right side
559,830.11x = 116,813,663,180.96 - Step 5: Solve for x
x = 116,813,663,180.96/559,830.11 - Step 6: Final answer
x = 208,659.13
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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.