Finding the Fourth Proportional to 318,774.99, 478,110.60 and 129,227.70
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Solution
The fourth proportional to 318,774.99, 478,110.60 and 129,227.70 is: 193,820.52
Step by Step Solution
- Step 1: Write the proportion equation
318,774.99 : 478,110.60 = 129,227.70 : x - Step 2: Convert to fraction form
318,774.99/478,110.60 = 129,227.70/x - Step 3: Cross multiply
318,774.99x = 478,110.60 × 129,227.70 - Step 4: Simplify right side
318,774.99x = 61,785,134,976.53 - Step 5: Solve for x
x = 61,785,134,976.53/318,774.99 - Step 6: Final answer
x = 193,820.52
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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.