Finding the Fourth Proportional to 320,772.10, 442,651.88 and 177,518.74
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Solution
The fourth proportional to 320,772.10, 442,651.88 and 177,518.74 is: 244,968.32
Step by Step Solution
- Step 1: Write the proportion equation
320,772.10 : 442,651.88 = 177,518.74 : x - Step 2: Convert to fraction form
320,772.10/442,651.88 = 177,518.74/x - Step 3: Cross multiply
320,772.10x = 442,651.88 × 177,518.74 - Step 4: Simplify right side
320,772.10x = 78,579,003,996.23 - Step 5: Solve for x
x = 78,579,003,996.23/320,772.10 - Step 6: Final answer
x = 244,968.32
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1.5x scale
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.