Finding the Fourth Proportional to 393,137.20, 589,705.80 and 97,649.20
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Solution
The fourth proportional to 393,137.20, 589,705.80 and 97,649.20 is: 146,473.80
Step by Step Solution
- Step 1: Write the proportion equation
393,137.20 : 589,705.80 = 97,649.20 : x - Step 2: Convert to fraction form
393,137.20/589,705.80 = 97,649.20/x - Step 3: Cross multiply
393,137.20x = 589,705.80 × 97,649.20 - Step 4: Simplify right side
393,137.20x = 57,584,299,605.36 - Step 5: Solve for x
x = 57,584,299,605.36/393,137.20 - Step 6: Final answer
x = 146,473.80
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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.