Finding the Fourth Proportional to 320,973.74, 442,938.34 and 177,730.70
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Solution
The fourth proportional to 320,973.74, 442,938.34 and 177,730.70 is: 245,265.37
Step by Step Solution
- Step 1: Write the proportion equation
320,973.74 : 442,938.34 = 177,730.70 : x - Step 2: Convert to fraction form
320,973.74/442,938.34 = 177,730.70/x - Step 3: Cross multiply
320,973.74x = 442,938.34 × 177,730.70 - Step 4: Simplify right side
320,973.74x = 78,723,741,225.04 - Step 5: Solve for x
x = 78,723,741,225.04/320,973.74 - Step 6: Final answer
x = 245,265.37
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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.