Finding the Fourth Proportional to 385,353.23, 578,085.12 and 119,134.53
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Solution
The fourth proportional to 385,353.23, 578,085.12 and 119,134.53 is: 178,718.89
Step by Step Solution
- Step 1: Write the proportion equation
385,353.23 : 578,085.12 = 119,134.53 : x - Step 2: Convert to fraction form
385,353.23/578,085.12 = 119,134.53/x - Step 3: Cross multiply
385,353.23x = 578,085.12 × 119,134.53 - Step 4: Simplify right side
385,353.23x = 68,869,899,071.19 - Step 5: Solve for x
x = 68,869,899,071.19/385,353.23 - Step 6: Final answer
x = 178,718.89
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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.