Finding the Fourth Proportional to 320,938.68, 442,909.20 and 177,698.70
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Solution
The fourth proportional to 320,938.68, 442,909.20 and 177,698.70 is: 245,231.86
Step by Step Solution
- Step 1: Write the proportion equation
320,938.68 : 442,909.20 = 177,698.70 : x - Step 2: Convert to fraction form
320,938.68/442,909.20 = 177,698.70/x - Step 3: Cross multiply
320,938.68x = 442,909.20 × 177,698.70 - Step 4: Simplify right side
320,938.68x = 78,704,389,058.04 - Step 5: Solve for x
x = 78,704,389,058.04/320,938.68 - Step 6: Final answer
x = 245,231.86
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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.