Finding the Fourth Proportional to 318,927.72, 478,409.04 and 129,359.94
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Solution
The fourth proportional to 318,927.72, 478,409.04 and 129,359.94 is: 194,046.99
Step by Step Solution
- Step 1: Write the proportion equation
318,927.72 : 478,409.04 = 129,359.94 : x - Step 2: Convert to fraction form
318,927.72/478,409.04 = 129,359.94/x - Step 3: Cross multiply
318,927.72x = 478,409.04 × 129,359.94 - Step 4: Simplify right side
318,927.72x = 61,886,964,709.86 - Step 5: Solve for x
x = 61,886,964,709.86/318,927.72 - Step 6: Final answer
x = 194,046.99
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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.