Finding the Fourth Proportional to 318,821.58, 478,215.84 and 119,126.19
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Solution
The fourth proportional to 318,821.58, 478,215.84 and 119,126.19 is: 178,683.11
Step by Step Solution
- Step 1: Write the proportion equation
318,821.58 : 478,215.84 = 119,126.19 : x - Step 2: Convert to fraction form
318,821.58/478,215.84 = 119,126.19/x - Step 3: Cross multiply
318,821.58x = 478,215.84 × 119,126.19 - Step 4: Simplify right side
318,821.58x = 56,968,031,016.85 - Step 5: Solve for x
x = 56,968,031,016.85/318,821.58 - Step 6: Final answer
x = 178,683.11
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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.