Finding the Fourth Proportional to 257,340.30, 385,878.78 and 107,539.68
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Solution
The fourth proportional to 257,340.30, 385,878.78 and 107,539.68 is: 161,254.50
Step by Step Solution
- Step 1: Write the proportion equation
257,340.30 : 385,878.78 = 107,539.68 : x - Step 2: Convert to fraction form
257,340.30/385,878.78 = 107,539.68/x - Step 3: Cross multiply
257,340.30x = 385,878.78 × 107,539.68 - Step 4: Simplify right side
257,340.30x = 41,497,280,519.99 - Step 5: Solve for x
x = 41,497,280,519.99/257,340.30 - Step 6: Final answer
x = 161,254.50
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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.