Finding the Fourth Proportional to 320,931.17, 442,898.84 and 177,691.20
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Solution
The fourth proportional to 320,931.17, 442,898.84 and 177,691.20 is: 245,221.51
Step by Step Solution
- Step 1: Write the proportion equation
320,931.17 : 442,898.84 = 177,691.20 : x - Step 2: Convert to fraction form
320,931.17/442,898.84 = 177,691.20/x - Step 3: Cross multiply
320,931.17x = 442,898.84 × 177,691.20 - Step 4: Simplify right side
320,931.17x = 78,699,225,469.75 - Step 5: Solve for x
x = 78,699,225,469.75/320,931.17 - Step 6: Final answer
x = 245,221.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.